Phoenix Arcade PCB Lot Repair - Part 1 - Troubleshooting with schematics and logic probe
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- čas přidán 28. 02. 2022
- In this video we will go through another step by step arcade pcb repair. I recently aquired a lot of 12 non working "Phoenix" pcbs. The goal here is to get as much running arcade pcbs out of this big lot as possible. In this video (part 1) we will be able to get 3 out ouf the 12 boards to work - main type of troubleshooting in this vid is working with the logic probe and schematics. Enjoy! Next part coming soon...
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Nice to see you doing repairs again! I like your explanations and methods, and you seem relaxed and patient. Board repairs are a form of therapy for me, if that makes any sense. 🙂
Thank you very much for looking into my content! I really enjoy your vids as well - especially the old school computer ones and arcade related vids. And yes it is a relaxing hobby isn't it - for me it is like yoga i guess...
Welcome back.
You don't know how many years i waiing for your videos
Well thank you very much! You were the one person seeming to care most of my whereabouts in the time I was taking a break... Great to hear that you like my vids!
I don't have a clue what you did here but I love watching these types of videos and you explained it very well. I'm looking forward to the next video for the rest of the lot.
Maybe consider doing a video where you explain the basics. You obviously know what you're doing and how to troubleshoot but for those of us that don't know what an and gate is or the flow of of the data through the board maybe try making a video for us complete newbs.
Thank you for your comment! Just uploaded part 2! I'm not really confident about my explanations myself. But glad you like my vids!!! I will eventually consider a vid about just the basics.
Very nice diagnostic and fault tracing. Thanks for sharing.
Thank you for watching!
It's great to see your videos again, Doktor! Greetings from Brazil!
Yes I'm back into it and enjoying it more than ever!
welcome back doktor! nice video... Phoenix is such a fun game... looking forward to seeing Pleiades :)
wow thank you very much! got a comment from the master himself! ;-) I really love your vids! watching every single one of them. Big honor to get a comment from you!!!
Well done! Excellent troubleshooting and explanation. Very methodical. Welcome back!
Thank you very much! Nice to hear you like my explanations - sometimes I'm not to sure how confusing my videos are... ;-)
Just stumbled across your channel while browsing related videos on my subscribed retro-hardware channels. I *love* the detail you go into while troubleshooting this. This was extremely educational and I appreciate you sharing your experience with us. I remember playing Phoenix and Pleides back in the day, and I always wondered how similar they were under the hood - very similar, apparently! Thanks for the great vid! Subscribing and checking out your others now.
I thought this was a great video despite not understanding all of it. Thanks for sharing you knowledge. Liked and subbed.
Thank you very much!
You are a true genius brother.
I'm not too sure about that but thank you very much for that compliment! ;-)
Hey Dr zett nice to see you back ...just a note for you ..the two bipolar proms for the pallet data can sometimes come with one missing ..the data is combined in to one i.c but still have the socket there for two i.c's ...I'll see if I can find my two boards and get the i.c numbers ..just for future reference I guess ..again a great repair sir ..don't leave us for so long again 😁
I am really back into the groove and as far as I can tell now I'm back to stay - as long as people like to watch my vids... ;-) Thank you for the remark with the prom chips, I will check that. That also might become relevant with the upcoming Pleiades repairs because those boards actually do have their color proms missing (or 3 out of 4 missing to be exact) at the moment.
Fanastic video! Subbed =D It's wonderful to see repairs like this on CZcams!
Thank you very much! Just checked out your chanel - gotta love it!!!! ;-)
It's cool to see you in here as well. I've been watching your videos for a long time, and they are still one of my favorite ways to relax after a stressful day.
I have a Dig Dug PCB that is doing the exact same thing with the glitches outside the playfield. This makes me want to have another look at it. The funny thing is, I was just getting ready to write a comment about it when you showed the same issue on your board. It's like you read my mind somehow!
Hopefully you can fix the issue! Best possible feedback for me is when somebody tells me he was able to repair his stuff because he applied something he saw in my vids! ;-)
thanks to brind to me this new experience
Hey ich habe das Spiel in der Spielhalle geliebt. Prima Reparatur!!! Weiter so !
Teil 2 folgt... vielen Dank fürs zuschauen!
Nice video! You have an excellent way of explaining how you trace the fault back on the schematic. Always nice to have a working board with these multiple pcb games. I repaired a bootleg phoenix a few months ago but only had one pcb stack so it took me a while. There were multiple faults, one was similar to your problem, I had the game working but the starfield in the background wasn't "blanked" so it was also behind the score. Took me a while to figure out what the problem was... Anyhow, looking forward to your next video of the logic board and the pleiades boards!
Thank you very much! Great board to fix actually.... nice schematics available with no custom parts. Great game!
Howdy - I’ve been following your repair videos closely. I really appreciate the detail you spend to explain things. You’ve inspired me and I’m currently attempting my own phoenix pcb repair. I wanted to ask if you could consider a video where you talk about changes that were made to the board such as jumper wires and such. The one I’m working on now has jumpers added, caps soldered to ic legs and other weirdness. Would love to see your approach to debugging why those types of changes were made, whether you try to go back to original board configuration, or other thoughts on this matter. Keep up the great work on these videos though!
Very helpful video! Gives me some confidence and guidance if I ever need to repair any of my pcb's (I'm sure that time will come one day... :-))
Probably... this stuff really is aging by now... ;-)
Awsome content, watching all of the video. Would love a tour of your test hookups etc! (Your almost to the magic 1k subs!)
Yes, magic 1k subs!!! I promise to make I live show once I make it ;-)
Thank you, great video 👍
Thank you!
Great video sir. I'm trying to fix a no video out Arkanoid and boy does it take a lot of paitence to hunt down the problem, especially with poor quality schematics. Looking forward to watching part 2.
Part 2 is out already. Enjoy!
Phoenix was actually developed by Taito, and Pleiads by Tehkan (Tecmo).
We need Part 2!!!!!!!!!!!!!!!!!!!!!!!:)
It's there!!! ;-)
hes back
Yes I am really getting back into the groove...
Nice job, your diagnostic skills are great. I've got a double dragon 2 pcb where the image has dropped about a centimeter from the top of the screen. I'm wondering do I have a similar horizontal circuit problem!
Thank you! If the image dropped down a centimeter maybe there is a problem with the vertical counters - that could be assumed if maybe the picture also appears to be incomplete contentwise on the very bottom of the screen. Otherwise It could also be a monitor problem.
Hi Doktorzett, I'm wondering if I can ask you a quick question since you have a working Phoenix PCB. In my repair on the CPU board, does your pin 11 wiggle on IC34? Mine is not and thus the two flip flops I suspect at IC37 are not doing much. In my case its stuck high coming out of IC34 and I want to confirm that its not the correct behavior. Is that correct? Should pin 11 be wiggling to have the flip flops be activated? Having real challenges getting a stable sync signal just to show garbage. I removed the CPU to take it out of the equation just to get this far. thanks so much for your help!
I’ve had several failures of the ribbon cables between the boards
Good point. After finishing the first set I crimped some nice custom cables I got some errors at first mysef ;-)
Shame I was one away from your 1000 subscriber!!
Got there with my other channel!
I am very grateful for your subscription never the less. ;-)
I have super breakout with a garbage screen
The problem must in the CPU area?
Could be the case. At least video output circuit and some rams should be working. The garbage means that noone is filling the rams with useful information. That would be the task of the cpu.