An update. After playing tape through 3 times it is starting to behave and play better. I am hoping that repeated play will get the transport to free up even more.
@@jasonthewiczman5442 Not really, most has been due to it sitting for a long time. After running the tape through it end to end a few times it is actually working pretty good now. I'm sure with a few more passes of the tape it will continue to improve. Have a guy with a Yamaha tape deck that I overhauled Dec 2021 and he said he never used it after getting it back until this week and it doesn't work. I call bullshit because it was working fine when it left here and I have the video to prove that after replacing the belts all was fine. But if it did sit for a few years without being used who knows. This old mechanical equipment needs to be used. Go leave your car sitting for several years and see what happens.
That's excellent news. I was going to suggest removing the tension band and soaking it with isopropanol. My NV-HS1000 K-Mech SVHS VCR was experiencing similar issues and doing this cleared them. I could smell the WD-40 from the mechanism miles away. Bought on E-bay from Germany, local flea markets no luck.
As a rookie, I learned a lot from your videos. Thank You. You taught me to appreciate that satisfying moment when something 30 years old that was considered junk few hours ago, now working as it should, and I made it happen. Thanks for the educational videos !
I used IPA to get what I could off it, and after it ran through a tape 3 times it started playing much better. Its now on the 5th pass and is getting better every time.
is it possible to take off that roller at all. Clean it in hot soapy water, in uk we got fairy washing up liquid as its a de greaser for your plates and really good for cleaning belts and rubber pully wheels :) eg. my xbox 360 drawer has a belt with pullies, put a bit of washing up liquid on the belt with some water, rinse then dry with microfibre cloth. all works fine.
The thought has occurred to me that as the tape is 'scanned' diagonally, then any small wow/flutter from the pinch roller will probably not impact on the sound, since the data will be 'buffered' and playback is taken (and decoded) from the buffer.
Here is the problem. There are literally hundreds of thousands of these tapes out there. It was not a successful consumer format due to all the anti copy bullshit the consumer equipment was required to have. The professional gear had none of that crap. DAT was used in literally every recording studio in the world as well as radio stations, TV stations, and sound recording for motion picture film. I have a friend that worked in film and TV as a sound man. They switched from analog to digital in the 90's and started using Tascam DAP1. Ran 2 of them one calibrated to 20db inder the prima machine so that in the event of an over level they had a backup that was 20db lower. My friend said it was so much better using dat than Nagra reel to reel, and the post people just loved it, because NLE was being used and since DAT has time code it was very easy for the post crew to just dump the tape and work with files. Today its all done with hard drives. The thing is this, there are all these tapes out there and many, that have yet to be archived. The fella that owns this one had NPR (National public radio) broadcasts on DAT that he wishes to archive and put in the cloud archive. There are some audiophiles that still use the format, but the majority of people repairing these machines are doing it just so they can get material archived. Myself I have a couple hundred tapes, mostly off air recordings. Used to have an FM station that had a show every night at midnight called the midnight disk. They would load a CD, announce the tracks and literally give listeners a count down for when he as going to press play so everyone could hit record on their tape decks. Those were the days. Now they can't play more than 2 songs without a Dr Polock commercial to advert lengthening or hardening your pecker.
@12Voltsvids Hey Dave i love too see you do a video on some old Zenith floor model console televisions. Like Shango066 works on on his channel.I dont know if you like the old stuff made in America back then . Ill tell you one thing the Televisions were made way better back then . Ultrasonic remotes cleared the way for modern technology. Solid state Television and Old hybrid Tube and full tube sets had better sound we actually beat Sony in sound quality louder and clearer . Too bad the old sets didnt have stereo back in the 1970'S . I guess thr broadcasters didn't want too make it happen .
Stereo sound on TV was far more complex than FM stereo. Even though it operates using the same principle you have that hasty 15KHz horizontal sync pulse on the video channel that will mess with the pilot tone required for demodulation. It also added 2 additional audio channels. So a total of 4. The original mono, and the stereo difference channel, secondary audio, and a professional channel used as IFB for field reporters. It also incorporated DBX noise reduction. The pilot signal is 15.734khz, the same as as the horizontal sync Oh hell I'll let wipepedia explain it. "The original North American television standards provided a significant amount of bandwidth for the audio signal, 0.5 MHz, although the audio signal itself was defined to extend from 50 Hz to 15,000 Hz. This was centered on the audio carrier signal 4.5 MHz above the video signal, and given 25 kHz on either side of the carrier, using only 15 kHz of it.[6] This meant the lower and upper 0.2475 MHz of the audio channel was unused. Due to the nature of the NTSC color signals added in the 1950s, the upper parts of the color signal pushed into the lower audio sideband. With the audio signal centered within the 0.5 MHz channel, and the lower 0.25 MHz being partially infringed on by leftover video signal, the upper 0.25 MHz was left largely empty.[6] MTS worked by adding new signals to the free portion of this upper 0.25 MHz allocation. The original audio signal was left alone and broadcast as it always had been. Under MTS, this is the Main Channel. The actual signal in this channel is constructed by adding together the two stereo channels to produce a signal largely identical to the original monoaural signals and can be received on any NTSC television even without stereo circuitry.[6] A second channel is then added, the Stereo Subchannel, centered at 31.468 kHz and extending 15 kHz on either side. This left a small gap between the Main and Stereo signals at 15.734 kHz. This pilot signal is also known as "H", or "1H", and its frequency is selected to be a harmonic of the video's horizontal scan signal so that it can be accurately recreated from the video signal using a phase locked loop. If there is any signal present at the 1H frequency, the television knows a stereo version of the signal is present.[6] The Stereo Subchannel consisted of the same two audio signals, L and R, but mixed out of phase to produce the "L-R" signal, or "difference". This signal is sent at a higher amplitude and encoded using dbx compression to reduce high-frequency noise. To lower total average power, the carrier is not sent (which means there is no always-on signal at that frequency). On reception, the receiver uses the video signal to create the Pilot, and then examines that frequency to see if there is any signal present. If there is, the difference signal is extracted by filtering out the signal between 1H and 3H into a separate channel, and the carrier is re-created by adding 2H to this. This signal is then decompressed from its dbx format, and then fed, along with the original Main, to a stereo decoder.[6] FM stereo radio works in the same fashion, differing mainly in that the equivalent to the H signal is 19 kHz, not 15.734. SAP, if present, is centered on 5H, but encodes a monaural signal at lower audio fidelity and amplitude.[6] The PRO signal is likewise encoded at 7H. A signal using all four channels extends only to about half of the available bandwidth in the original audio upper sideband."
I thought it might be a bad tape, dried out with lack of lubricant, causing drag on the head wheel, but I guess it still happened using a different tape.
Its his money. That extra weight adds a significant cost to the shipping. I would hate to guess because I have not had it weighed but I bet it is 200 each way. Yes its good to pack well, and this is the best way to ship stuff, but the cost is going to be through the roof. I had a guy double box a big VCR and when I took to the post office it was quoted 700 to ship. Ended up shipping it UPS but even that was 225. And to think I made a measly 100 on that repair. Less when considering that I had to drive it 20 minutes each way to ship it at the UPS depot.
An update. After playing tape through 3 times it is starting to behave and play better. I am hoping that repeated play will get the transport to free up even more.
@@jasonthewiczman5442 Not really, most has been due to it sitting for a long time. After running the tape through it end to end a few times it is actually working pretty good now. I'm sure with a few more passes of the tape it will continue to improve. Have a guy with a Yamaha tape deck that I overhauled Dec 2021 and he said he never used it after getting it back until this week and it doesn't work. I call bullshit because it was working fine when it left here and I have the video to prove that after replacing the belts all was fine. But if it did sit for a few years without being used who knows. This old mechanical equipment needs to be used. Go leave your car sitting for several years and see what happens.
That's excellent news. I was going to suggest removing the tension band and soaking it with isopropanol. My NV-HS1000 K-Mech SVHS VCR was experiencing similar issues and doing this cleared them. I could smell the WD-40 from the mechanism miles away. Bought on E-bay from Germany, local flea markets no luck.
As a rookie, I learned a lot from your videos. Thank You. You taught me to appreciate that satisfying moment when something 30 years old that was considered junk few hours ago, now working as it should, and I made it happen. Thanks for the educational videos !
Cheers for the vids man. Really dig them especially the audio ones.
I would remove the tension arm band and wash it with dishwasher detergent to get all the grease off and roughens the spidle a little bit.
I used IPA to get what I could off it, and after it ran through a tape 3 times it started playing much better. Its now on the 5th pass and is getting better every time.
At around 24 minutes mark, it's so interesting to see it run totally uncovered, for some reason to me. Great video!
Its like watching a mini VCR. Oh wait this is a mini VCR
Dave, that tube of toothpaste is diminishing a lot faster than the Sony pouches. Great work..
Not really, this will last me for years,
Not DAT again, that machine looks like it came from Hell.
I had my first magic smoke.
is it possible to take off that roller at all. Clean it in hot soapy water, in uk we got fairy washing up liquid as its a de greaser for your plates and really good for cleaning belts and rubber pully wheels :) eg. my xbox 360 drawer has a belt with pullies, put a bit of washing up liquid on the belt with some water, rinse then dry with microfibre cloth. all works fine.
how do u charge for repairs? Do u give estimates before i ship it to u?
The thought has occurred to me that as the tape is 'scanned' diagonally, then any small wow/flutter from the pinch roller will probably not impact on the sound, since the data will be 'buffered' and playback is taken (and decoded) from the buffer.
No wow and flutter on dat. It's digital. The scanner reads the data into a memory buffer. Then it is clocked out at a constant rate and decided.
@@12voltvids Yes, as you say buffered, clocked and processed. I recall these back many decades ago, but I confess I had no interest in them.
Defunct format.
Here is the problem. There are literally hundreds of thousands of these tapes out there. It was not a successful consumer format due to all the anti copy bullshit the consumer equipment was required to have. The professional gear had none of that crap. DAT was used in literally every recording studio in the world as well as radio stations, TV stations, and sound recording for motion picture film. I have a friend that worked in film and TV as a sound man. They switched from analog to digital in the 90's and started using Tascam DAP1. Ran 2 of them one calibrated to 20db inder the prima machine so that in the event of an over level they had a backup that was 20db lower. My friend said it was so much better using dat than Nagra reel to reel, and the post people just loved it, because NLE was being used and since DAT has time code it was very easy for the post crew to just dump the tape and work with files. Today its all done with hard drives. The thing is this, there are all these tapes out there and many, that have yet to be archived. The fella that owns this one had NPR (National public radio) broadcasts on DAT that he wishes to archive and put in the cloud archive. There are some audiophiles that still use the format, but the majority of people repairing these machines are doing it just so they can get material archived. Myself I have a couple hundred tapes, mostly off air recordings. Used to have an FM station that had a show every night at midnight called the midnight disk. They would load a CD, announce the tracks and literally give listeners a count down for when he as going to press play so everyone could hit record on their tape decks. Those were the days. Now they can't play more than 2 songs without a Dr Polock commercial to advert lengthening or hardening your pecker.
I'm wonder (as I watch) whether these DAT tapes also can go 'frictional', like ordinary cassette tapes?
Never see that happen.
Get a heat gun and go over it. Clean it first then heat the board. Ignore the multimeter
WTF?
@@12voltvids It's what the kids do to fix 2000s era xboxes and playstations. makes the lead-free solder work again for awhile.
Are u sure there isn't a slipping belt?
There are 4 belts. Tray in out, tape up / down, threading and reel drive. The owner changed the belts before sending.
I swear, you have that cat only to catch mice...
He wants to play. He identifies as a dog. Wants to play fetch.
@12Voltsvids
Hey Dave i love too see you do a video on some old Zenith floor model console televisions.
Like Shango066 works on on his channel.I dont know if you like the old stuff made in America back then .
Ill tell you one thing the Televisions were made way better back then .
Ultrasonic remotes cleared the way for modern technology.
Solid state Television and Old hybrid Tube and full tube sets had better sound we actually beat Sony in sound quality louder and clearer .
Too bad the old sets didnt have stereo back in the 1970'S .
I guess thr broadcasters didn't want too make it happen .
Stereo sound on TV was far more complex than FM stereo. Even though it operates using the same principle you have that hasty 15KHz horizontal sync pulse on the video channel that will mess with the pilot tone required for demodulation. It also added 2 additional audio channels. So a total of 4. The original mono, and the stereo difference channel, secondary audio, and a professional channel used as IFB for field reporters.
It also incorporated DBX noise reduction. The pilot signal is 15.734khz, the same as as the horizontal sync
Oh hell I'll let wipepedia explain it.
"The original North American television standards provided a significant amount of bandwidth for the audio signal, 0.5 MHz, although the audio signal itself was defined to extend from 50 Hz to 15,000 Hz. This was centered on the audio carrier signal 4.5 MHz above the video signal, and given 25 kHz on either side of the carrier, using only 15 kHz of it.[6]
This meant the lower and upper 0.2475 MHz of the audio channel was unused. Due to the nature of the NTSC color signals added in the 1950s, the upper parts of the color signal pushed into the lower audio sideband. With the audio signal centered within the 0.5 MHz channel, and the lower 0.25 MHz being partially infringed on by leftover video signal, the upper 0.25 MHz was left largely empty.[6]
MTS worked by adding new signals to the free portion of this upper 0.25 MHz allocation. The original audio signal was left alone and broadcast as it always had been. Under MTS, this is the Main Channel. The actual signal in this channel is constructed by adding together the two stereo channels to produce a signal largely identical to the original monoaural signals and can be received on any NTSC television even without stereo circuitry.[6]
A second channel is then added, the Stereo Subchannel, centered at 31.468 kHz and extending 15 kHz on either side. This left a small gap between the Main and Stereo signals at 15.734 kHz. This pilot signal is also known as "H", or "1H", and its frequency is selected to be a harmonic of the video's horizontal scan signal so that it can be accurately recreated from the video signal using a phase locked loop. If there is any signal present at the 1H frequency, the television knows a stereo version of the signal is present.[6]
The Stereo Subchannel consisted of the same two audio signals, L and R, but mixed out of phase to produce the "L-R" signal, or "difference". This signal is sent at a higher amplitude and encoded using dbx compression to reduce high-frequency noise. To lower total average power, the carrier is not sent (which means there is no always-on signal at that frequency). On reception, the receiver uses the video signal to create the Pilot, and then examines that frequency to see if there is any signal present. If there is, the difference signal is extracted by filtering out the signal between 1H and 3H into a separate channel, and the carrier is re-created by adding 2H to this. This signal is then decompressed from its dbx format, and then fed, along with the original Main, to a stereo decoder.[6] FM stereo radio works in the same fashion, differing mainly in that the equivalent to the H signal is 19 kHz, not 15.734.
SAP, if present, is centered on 5H, but encodes a monaural signal at lower audio fidelity and amplitude.[6] The PRO signal is likewise encoded at 7H. A signal using all four channels extends only to about half of the available bandwidth in the original audio upper sideband."
Repairing stuff - very very very time consuming.
I thought it might be a bad tape, dried out with lack of lubricant, causing drag on the head wheel, but I guess it still happened using a different tape.
Though calling the dude for the flight case out came across as a bit rude.
Its his money. That extra weight adds a significant cost to the shipping. I would hate to guess because I have not had it weighed but I bet it is 200 each way.
Yes its good to pack well, and this is the best way to ship stuff, but the cost is going to be through the roof. I had a guy double box a big VCR and when I took to the post office it was quoted 700 to ship. Ended up shipping it UPS but even that was 225. And to think I made a measly 100 on that repair. Less when considering that I had to drive it 20 minutes each way to ship it at the UPS depot.