1978 Seiko Pan Am M158-5000 Vintage Digital Watch Restoration
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- čas přidán 2. 03. 2024
- This episode I have another vintage digital watch repair and a bit of an iconic digital watch amongst collectors. This is my Seiko Pan Pam M158-5000 World Timer. I bought it online without a description I could understand but knowing the watch was not running. Can I repair this one? well get a cup of tea and relax and watch me attempt this repair.
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About me:
My name is Mike and I am a hobbyist watchmaker. I am completely self-taught in watch repair and restoration. My channel is all about my journey of hobbyist of watchmaking. I have watch repair tutorials, watch restorations and watch repair videos. Some of my content you can easily follow along to if you are working on the same watch movement. My main focus is to document my journey and inspire more people into this wonderful hobby and demonstrate that this hobby can be very rewarding. I do not profess to be a professional watchmaker and in my videos, I show all my mistakes, mishaps, highs and lows and keep everything as honest as possible. It is easy to edit all the mistakes out and make my videos look perfect but I believe that keeping it real reflects the true reality of this hobby. So what are you waiting for? please check out my watch repair and restoration videos, get inspired and start your own watchmaking journey.
#watchrepair #watchrestoration #watchmaking
My father was a flight engineer with Pan Am for 29 years and he wore a Seiko M158-5000. He loved the watch and I loved to see him wear it. Thank you for bringing this precious memory back to folks like me and hopefully many others.
What a great coincidence that he would wear this watch and it then being nicknamed the Pan Am! thanks for watching.
I believe it was named Pan Am because Pan Am gave all of their pilots the watch.
@@dkevvv I didn’t know that I read it was because it was favoured by pilots but your info sounds more plausible. Thanks
Fabulous
Don't often see digital watch restoration, this is more (micro) electronics repair than watch making, hats off to the stacked skill set.
Thank you. I will try to repair any watch that takes my interest.
you are doing vintage stuff very nice things..
I'm grateful to see someone seriously address digital watch repair. Thank you! And wow, what a cool old watch!
Thank you. I have a playlist of all my digital watch repair videos on the channel.
@MyRetroWatches do you sell ?
@@abnnuzzinicholasclay686 rarely. I pick up watches I want for my collection with the proviso that they need work.
The Seiko machine that you are using to check the accuracy is, in its root form, a frequency counter. It is measuring the frequency of the quartz crystal oscillator inside the watch. It is then comparing it to the ideal frequency (usually around 32 KHz, but it does vary), and then takes the variation between the ideal frequency and what the watch frequency, and calculates the daily variation from the ideal.
The heat you are feeling is probably from an ovenized crystal oven, which creates an extremely stable frequency that is the reference for comparison to the watch’s frequency. Crystals do change their frequency when exposed to temperature variations. Pitting the Seiko timing machine’s crystal reference in an oven reduces the variation significantly. Typically, a frequency counter with a regular crystal will have a variation of 1x10^-6 to 1X10^-7. An ovenized crystal will have a variation of 1 X10^-9 to 1x10^11.
How does it pick up the oscillator in the watch? Inductive?
The frequency of the crystal is 32,768 KHz
Yes it is an integer power of two. Flip flops always divide the frequency by two, so with this frequency you can eventually get an exact 1 Hz... (s^-1)@@allankristiansen8133
i wouldn't know the actual means through which it picks up the crystal oscillations, but the crystal sends out pulses of electricity, this creates a small electric field that's picked-up by the processor to clock itself, a bit like a piston in an engine, it uses the crystal to know it's up, and down states, either way that pulse of electricity is going to be at, or near a specific frequency, and you can pick-up the electromagnetic field from it using the base he put the watch on, so there's a coil in there, i guess it would be inductive, and from the pulses received from the coil, it can count what's happening in the watch... i think, anyway... kinda like how you can charge your phone, or toothbrush without electrical contact, same thing, but really small currents...
Took the words from my mouth. My grandfather founded a crystal oscillator factory. Today the supply OCXO to satellites. The temperature at which the oven heats to, brings the oscilator to a flat point on its cubic frequency response vs temperature graph, that itself is determined by the angle at which the grain is cut in the quartz.
I remember my dad getting this watch when I was a kid. Blew my mind!
Yes, we would like to see more digital.
No idea why CZcams suggested this video to me, but I like that they did
I too kkkkkk
Same
'World Time' watches were in vogue in the 70's The Concorde started service in the 70s and it was the 'Jet Age'. I have a Caravelle (Bulova) world time watch with an AS movement. This is the first digit world time watch I've seen. Learned something today.
Thats a good point.
Thanks for trying to save this watch. Anyone else would have chucked this classic
good ones are $300 upwards so throwing one would be insane. I was nervous buying it with no idea if it worked or not.
I had to watch the video three times and I am pretty sure that you forgot to let down the main spring. 😂 All the pro's do that. I love these 70's digital watches that were new when I got my first watch. Thanks for sharing.
hahaha !
Typical quartz watches do not compensate for temperature, so it is important to take note of the temperature at the moment that you are regulating it. Worn on the wrist, the watch will get warm from contact with your skin so it will be warmer than the ambient temperature of the room. That temperature is roughly 30ºC, while the temperature the watch will be stored at may be considerably less. If you like to have your watch be accurate when you need to grab it and go, you will consider its storage temperature and regulate it around that temperature. Even if you wore it every day, it still will be off overnight most likely, so somewhere between storage temperature and wearing temperature would be a good spot to shoot for. The Seiko Superior and others that had twin quartz oscillators did do some temperature compensation. Those watches can only be regulated with the QT-99 (good choice of machine Michael!) or QT-2100 or later quartz testers or by using an adapter, called QT-Adapter, which was made to use with the QT-77, QT-100, and QT-200 testers. Lots of modern quartz watches are not even adjustable so this whole subject of regulating is moot and a quartz tester just tells you the rate it is running at. You will find most of those movements run fast a few seconds per day. High end quartz movements are thermally compensating and accurate to within seconds per year or month. Most (all?) vintage Seiko quartz movements had trimmer capacitors for regulating them, but the run of the mill ones today do not.
Thank you for your comprehensive reply. Yes I am aware temperature is a big factor and testing this watch at 10c was not a good working temperature but its where the machine is housed for now. Its only been used in anger once so far. I bought it from Japan and had it just over a month. Plan to do a video on it but as I am no expert on the machine or electronics I can only show how I use it really and I want to find out for myself how much adjustment a trimmer can give on a watch.
Are you suggesting that even if I have the ideal temperatures that "regulating" the trimmer would not really improve anything? I have a Seiko 0634-5019 which runs at least 1 second a day fast on the machine and was going to adjust this one.
Thanks again
@@MyRetroWatches you can find articles on temperature compensation and estimate where the watch will run at the temperature you are aiming for, then regulate it at its actual current temperature to hit a specific target you estimated. Or, just shoot for perfect and then come back later after seeing the watch’s actual rate average over time and then speed it up or slow it down accordingly. But honestly, with a watch that doesn’t do temp compensation, there isn’t much point in being too exact, so I shoot for being on the plus side always because it’s easy to hack the watch when I go to use it and the rate difference over the course of a few days is negligible. I just had my 0439 on the tester the other day. I had it on my wrist for a long time. Put it on the mic and got a reading of +.015 (3 digits on a QT-2100). I left it there and watched it go all the way up to +.250 as it cooled down to room temperature, which I think was 23°, so about a 7° delta. But wearing the watch all day, it held within a second every time I checked.
Brings back memories of buying a 1000 pc lot of discontinued NOS Seikos at 80% off list great watches from the mid 70s
what!?!?!?! 1000!
Your Seiko tester is basically a frequency counter with a high precision crystal oven for temperature stability. Crystals do age over time , so it may not be as accurate as it was once was. The ovens usually have an adjustment port on them for the crystal adjustment if you have something to calibrate it against. It usually will tell you the frequency on the top of the oven. A nice piece of old equipment. Thank you for sharing it.
Thanks for your insight. I know a man who can calibrate this actually , not sure how it’s done but it can be apparently.
This is the first time I’ve used it properly as I’ve only had it a month.
I’m now electronically minded though but know it’s a good asset to have on the bench.
Thanks for watching this episode.
I have a witschi version and calibrated it using a cheap GPS receiver that outputs the 1 PPS signal derived from the atomic clock on board the satellites. Wiring the pps signal to a piezo sounder (optional - just to hear it) & wired in parallel to a rotor coil from a cheap quartz alarrm clock (for the tester to sense the drive pulses). Works a treat.
@wirdy1 The GPS satellites have their clocks to less than three nano seconds, or 3 billionth of a second. You can 0 beat your receiver to WWV on one of the even frequencies, like on 20 Mhz, or 10 or 15. It should give you a very accurate calibration. I am a ham radio operator and we have been doing this for years. Just an FYI, but I would like to know how to get the GPS. I just have not tried.
Astonishing how much mechanical gubbins was in this digital watch. I do love the Panaplex display in the Seiko Quartz tester it has to be said.
I love these. The Lemon Face! I've had a couple of these over the years and they rock! Great vid Mike
Thanks pal! pleased you tuned in for this one.
You did an amazing job Mike. Thanks for the video
Thanks mate
Loved the combination of mechanical and electrical work performed on this watch....at times it was like watching an episode of the old 'Mission Impossible' series. Yes to more digital watches, yes to more on the Seiko quartz tester.
Thank you !
Thanks Mike super interesting video I love a quartz watch 😊
Wow! Awesome restoration. So cool to see such an early electronic GMT. Seiko never fails to impress with innovation.
Couldn't agree more!
Awesome video! Thanks!
Glad you liked it!
This vintage digital watch restoration video is amazing! Your skills are incredible. The way you take apart, clean, and put those watches back together shows a real talent. It's more than fixing a watch; it's like an art, and you've got it down. Great job on bringing those vintage watches back to life with so much care and dedication!
Thank you very much! I was not expecting such praise. A digital watch compared to a mechanical is a lot easier in construction so tearing it down is not scary .
Glad you enjoyed this one.
Oh yes! Very unusual these days to watch something like that - dedication ...
Well done and thanks for sharing. I'm old enough to remember the introduction of first LED, then LCD digitals and the fascination they brought.
Regards,
Brilliant. You're very brave to dismantle that to that degree. I received a new Sekonda LCD that has a bezel thats sort of a panam homage without the functionality, but the Seiko has a much better case.
Say Hi to Lee Mack by the way 😁👍
haha I will! The digital watches are much easier to take apart than mechanical!
That has given me the confidence to tackle the 2 or 3 70s digital watches I've got.
What a lovely watch.
I got the jitters watching you put those e-clips back though. I restored a Casio W-726 (buttons;gasket etc) and removing/replacing those clips, I was shaking.
Wow sooo cool
*Very good.*
Bit of a rollercoaster, so glad it worked out in the end. Great work on what was some cutting edge tech at the time.
Massive fan of Lee Mack. Him and Tim Vine on Not Going Out was like my comedy dream team.
Next time I see you mate I will tell you all about it!
Great motor skills and knowledge. The pauses where we can hear you addressing the problem are flawless;)
My grail watch at 12 yrs old .
As an commercial aviation enthusiast this item is very exciting for me.
I enjoyed the digital repair of this watch! I have a Bulova Quartz from ( I think 1980) that needs repairing and looking at what needs to be done. I think my issue is a capacitor problem but not sure. Appreciated the troubleshooting you went through and was happy to see it work for you!
Love the digital watch content. Keep that coming.
As I find them I will bring them to the channel.
very cool, i'd enjoy tester and /or quartz watch content too
That's a very nice watch, reminds me that I've got to fix my Silver Wave Solar that I got new in 1983.
My gosh. As an American who discovered British panel shows several years ago when I was struggling with taking care of my parents with cancer..... They have been such a lifesaver for me to unwind and always get a good laugh. Everything here is always so serious and life or death..... We just don't have television like you all do over there!
I was literally just watching wilty and hignfy earlier this evening. And specifically remember perking up when I first heard the bit about Lee Mack being an apprentice watchmaker! I was an apprentice watchmaker for a few years right after high school, until I realized im not cut out for it.
So my ears really perked up at that wilty bit..... And that's so cool to know that he was your apprentice!
Now I specialize in metrology equipment and test gear evaluation, calibration, and repair.
And not too dissimilar from the circuitry found in digital watches. So I find that bit fascinating..... And would love the chance to characterize some of those components, and even decapsulate, x-ray, and reverse engineer some of the ic's and components.
Yes we have many great TV comedy shows. Not all Americans get our humour but some do. Actually plenty of Americans doing reactions to UK TV shows on here like King Boomer or After work reactions channels. Might give you inspiration to see more things you may have not known about.
Well done Mike. I want to rescue watches like this. In America it is hard to find ones you have found in Great Britten. Anyway, Good job!
I hunt all over the world for watches . This one actually came from Japan. Only place I don’t buy from is your country because post to UK is on another level of expense and then I get taxed on receipt too..
There is always good projects to be found in Europe on eBay .
Another great Video thanks again I have had a few seiko digital watches they were well made as all seiko were in that time I would love more on the QT99 because I would love to own one myself please keep them coming 👍
Lovin that watch Mike do some more
Never seen that quartz tester, would be very interested to learn more about it. Those old quartz watches from 70s were really stylish and I admire your bravery in tackling such old electronics! I had a Casiotron on a mesh bracelet from 1978, from new, that I literally wore out after 15 years!
Cool old watch.
All oscillators are affected by temperature. Super accurate quartz oscillators have a "crystal oven" that keeps the reference at a fixed temperature, at which it is calibrated. That temperature is maintained in future measurements to ensure maximum accuracy. Back in the day it was easier to heat up something to a target temperature then maintain it at an arbitrary temperature.
Thanks for the info!
It's still done that way. For both time and voltage standards at least ovenised crystals and references are how it's done.
wow...all the best...
I had one of those watches, I absolutely loved it, I miss it terribly, and I've never wanted a watch, or a guitar or anything else, as much as much as I want that watch now I see it.
Wear it with my infinite envy.
Mine had "LAX" instead of "Los Angeles" on the face.
For me, in life, not much is better than a vintage digital watch. Or an 80’s clock radio. Can’t explain how important the 2 are to me.
I was just thinking about you yesterday. I was hoping you were doing okay. So it's good to see you working on an odd Seiko digital that got my interest.
Thanks . All good here although another blood test next week which is always a bit scary
@@MyRetroWatchesThere's always those concerns, but keep thinking you'll be fine. 🙂
well done mike, a great job
Amazing watch,rarities...
Good work,thank you.
Seiko the best watch and super technological.
As a kid growing up in the late 70’s, this was my absolute grail watch (before I knew the term). Of course also as a kid I could never afford it… so thank you very much for taking the time to show us its innards! I love your videos man… 🙏
Thank you !
Fantastic stuff, Mike 👍 it was a joy to see the restoration of such an iconic Seiko digital 💛
That's awesome to be on TV. Especially with Lee Mack and David Mitchell!
Yes was an amazing day. I had a zoom call with Lee for a few hours genuinely helping him with his Seiko 5.
Lee seems like a decent guy.
I have one of these bought by my ex around late 1970s Still in beautiful condition
Keep hold of it and store it without a battery. Good ones I have seen go for £300+
@@MyRetroWatchesIwill thank you
saludos desde argentina, no suelo ver cpsas de relojeria pero soy tecnico en electronica y computacion de 58 años y vi rl parecido con un reloj que tuve un citizen multialarma II alla por el 80, admiro su tacto paciencia y tecnica en el uso de hermmientas tan pequeñas... soberbio trabajo saludos desde argetina para ud
Wow a Pan Am Watch. That's awesome Watch.
Thanks for watching!
Very fun to see some digital watch repair and especially showing off a watch that came far before modern "one size fits all" movements.
Great Job! I was sooo hoping you'd try the other screen to see if it would be better. Keep up the great work!
I remember them, I had a seiko similar to that.
A Longines Quartz Watch - was the first to be patented for temperature compensation components within the Watch. I bought a Longines for this reason. Inside, my Watch is unusual, because there are two coils, and (from memory) these are used for the temperature compensation. A common failing of the LCD Screen can be the Zebra Strip (the foam conductive rubber with black stripes). I had discovered that greater pressure can be put down on the zebra strip to get it to work again, and even a light clean with Meths helps. Great to see the old Seiko work again.
Amazing job!! Well done!
Thank you! Cheers!
Brilliant, absolutely brilliant. I think you've spawned some digital and electric interest with this one and your older Timex Electric/Dynabeat video. I bought a watch lot that arrived Saturday and in it I found almost a cosmetic pristine 79 Timex Electric (not running) and a Timex Quartz Lithium Digital Chronograph, so I'm going to rehab them. Actually, the chronograph runs flawless, but it's got some black dots on the clear top layer. I'm not sure if that is the LCD, maybe so.
Big effort for a digital watch. But congrats, you did it! Good result. Nice. 🕐⚙️🍸
As an electrical engineer this particular watch repair resonates with me. Really enjoyed this one.
Yes please make a video on the tester. Interesting!
Thank you for the video. This has given me more ideas when I start assembling my M158.
More similar videos, please! And more info on the QT-99 also!
Yes and yes. Thanks also for watching
Excellent video. I'm in Idaho so Denver time for me!! I say this with great respect---you are a complete watch Nerd!!! The highest of praise! Enjoy your channel!
Haha I will take that as a compliment 😂
Oh wow! I recently saw that episode of WILTY and thought it was so cool that Lee is learning watchmaking, never put two and two together that his teacher is you! Very cool!
Haha thanks. I had to keep it all secret. It was filmed last May! Lee is a great guy and I had a 2 hour call with him showing him how to fix his 6119 seiko movement.
Thanks for the video. I have a NOS NSC digital that needs work. One day. I posted a CZcams link on the FB page for the show
I'd love to see the digital watch collection!
There is a video that shows all of the watches I think.
I have just posted my digital watch video today. take a look
@@MyRetroWatchesYes, I got through half of it yesterday. I left a comment about the first Seiko you posted, which I also owned for a while.
Thank you, greetings from Mexico 🇲🇽!
Hola, thank you.
looking forward to watching you on WILTY… interesting video, definitely going to watch more!
Haha, I can't believe you were on WILTY, I love that show! I must find that episode now. I hope all is well over there, Mike. Another great restoration, keep them coming.
Thanks
@@MyRetroWatchesMust have been quite a challenge, listening to all that BS, while keepin the mask! Very well done!!!
And as to the Watch. It's so much more of a stunner, than i would ever believe...
I thought the digital watch repairing can not be interesting. I was wrong. It is a fantastic video again. Please let us know more about your digital watch collection and about the quartztester.
Thank you. Usually my digital videos do not get many views but this one seems to have taken off.
And yes, I would like a quartz collection video!
Beautiful watch.
Awesome video. Please do more digital watch videos.
Thanks! Will do!
Thoroughly enjoyed this video, a yes to everything and I looked up the WILtY as soon as you posted on IG, brilliant 👍👍
Thx for your very good video.
Thank you for showing, give me some insights to tackle mine PanAm 🙏
never watched a watch restauration..but after repairing old compur shutters this looks doable..interesting rig you have
Fantastic work on the restoration, Micheal.. What a great save..👌🥳 you must be thrilled to bits! What fantastic watches these Seiko's are! Would love to see your digital collection! 👍
I will produce the collection video soon. I have to buy a load of batteries first 😂😂😂
@@MyRetroWatches 😁😂
That’s a fine watch, and video.
Lots of patience required for this sort of work!
Great job.
After taking it apart 4 times I figured out why it wasn't working. The screen was dim because of a metal connection that wasn't making contact. OMG! It works as it should now!👏 I watched your video 3 times to get ideas. It is now for sale. 🙁
Had a lovely spot of tea while watching, here in the colonies. 🤗
Seriously, thank you for an awesome look back at some of that classic vintage technology.
On a personal note... Hopefully whatever issue you're dealing with, will be resolved quickly.
Thank you.
Nice watches! Nice work! Thank you!
Thanks for watching!
I was watching (no pun) WILTY when you came on as the mystery guest. I thought "I know that face" As soon as Lee Mack mentioned a SEIKO watch I said out loud "its Mike from U TUBE". I've been watching you for some time, as well as Joe, The Nekkid Watchmaker.
Thanks for the vids, your doing great job.
Haha it’s the biggest secret I’ve carried since May last year!
Lee was stuck on a Seiko 5 6119 movement. He found my channel and was watching the Seiko that survived a tank video. It’s an old one with dodgy camera work too but hey who would have thought he would be watching.
It's a lovely thing
Good job. I’ve played with restoring couple of quartz watches. Some just needed gentle cleaning. But I’ve found watches, or cameras, which had leaking mercury batteries, totally fried circuits. Maybe one function might work, but if gadget had multiple functions, a leaking mercury battery fries the circuits somehow. Not sure why.
i never imagined early digital watches were THIS elaborate
That was quite the job. Well done, Mike. And thanks for the demo on the quartz tester, that's a really neat machine. Cheers!
Thank you.
Let’s see more on the tester brilliant and yes I’d love to see your digital watch collection really interesting watching you rebuild it
Coming soon!
Very interesting topic here. I've never watched a digital time piece restoration and found this to be very interesting. I enjoy watching tools and equipment of all shapes, sizes and purposes being used to diagnose and repair things.
Very nice and charming watch...!
I like that watch Michael and of course you have set me on the path looking for one. It really is a cracking piece of watch history. You certainly improved the screen with the work carried out. Another good video and I would like to see some more digital watch watches. Well done!
I have one I am restoring. It has been around the world many times. It should be together in about a week.
Thanks Clive
Loved the watch restoration. And would love to see more on the test machine
More to come!
Great vid Mike, got to admit digital watches aren't really my thing but I was captivated by this one. Thanks for posting. Also I was impressed by the quality of the internals of the watch, easy to see the carry over of the way of thinking between the digital and mechanical seikos of that era.
Thanks. I have worked on many early Seiko digital and they are generally solid in their construction
great video.
waw absoltue tech back in 78, im amazed
Very good vidéo 😃
Me too, I remember: When my 2 years older brother and me got a very, very precious gift from our parents, pretty far out at the border to Germany (not really that far away, but back then the World was usually in every way infinitely large - which it is still, as if it is growing by looking at it...) they gave each of us - after pointing to the fact, that we would be heartbroken sad for the rest of our little innocent Lifes, if we miss this unique and mystic moment - a 9.95 DM (something like 10 Euros...) Noname Magic Gadget in the shape of a simple watch, but unbelievable but true, there was a calculator built in with tiny little rubber buttons (I swear this is true!) and even more buttons on its side and everything really worked! Stopwatch, alarm, date, everything in one thing. And today, after all kinds of different quite expensive watches, I wear a gift from an old buddy of mine, a Casio digital quartz, cheapest version, doing really great, not even had to change the battery for many years now, maybe this time it's an infinite, REALLY MAGIC kind of thing ...THANK YOU for this nostalgic, unexpected input, it's beautiful to watch!