#16
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I sure will.
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#17
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OK so I got a chance to plug in and power on the VCR and unfortunately its not working, when you go to power it on, it attempts to go through the power-up sequence but then it gets stuck at the part where it attempts to test the takeup reel motors and only the left takeup reel motor does anything the right takeup reel doesn't do anything, its just "dead".
This VCR did have a service shop tag on it from a repair shop in Salt Lake City, Utah that was dated 1989 and when I opened the VCR up to take a look inside it acted like the only servicing that was done in the VCR was on the topside (maybe the main loading mechanism belt was replaced at that time) as the underside panel screws were still torqued to factory specs and made the famous "crack" noise that screws make when they've been unscrewed for the first time in their history on vintage electronic devices. With all of this in mind what might be wrong with this VCR and can it be repaired easily? I have some photos I'll upload as soon as my google photos account starts to cooperate again, because right now its not loading correctly for some weird reason. |
#18
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#19
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Well the problem is the pictures were taken with my phone, and using Google photos is the only way I can get the pictures from my phone to my computer without having to mess with my phone's microSD card. As far as sacrificial tapes go, I have some old blank tapes that were NOS that someone gave me that I can use for that purpose, and the VCR seems to be in a "lockout" mode as it won't let me load a tape into the VCR and without the VCR being able to power on it won't allow me to load a tape into the VCR. |
#20
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Other than that, without a service manual and putting it on a bench to check things with an o'scope and DVM, don't know what to tell you. |
Audiokarma |
#21
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#22
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Well unfortunately when I was trying to remove the take-up reel assembly I ended up having one screw that happened to be torqued down too tight at the factory (which seems to be the case on every single VCR I work on) and when I was trying to unscrew the screw I ended up stripping the head out (because they used brass for the screw rather than stainless steel or some other harder material) so now I have one screw that's stuck in the take-up reel assembly and I'm able to get it out without having to resort to the possibility of having to drill it out.
What have you guys done in situations like this? |
#23
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You need a JIS screwdriver. I hear they prevent stripping screw heads out.
You see those are not Phillips screws, they are Japanese Industry Standard screws. https://en.wikipedia.org/wiki/List_o...ves#JIS_B_1012 |
#24
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Can JIS screwdrivers be bought at your everyday hardware store like Ace or TruValue or Lowe's or do you have to buy them online? |
#25
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Amazon sells them. I've never seen them in the usual box stores. I'm not saying that they don't, but I've never seen them. I've only read about them myself but people say they are real game changers.
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Audiokarma |
#26
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I did find a service manual for this VCR (its the Sam's version.)
I found the correct page for the Motor Drive Circuitry, hopefully that will help others follow along. Last edited by vortalexfan; 05-20-2022 at 05:58 PM. |
#27
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OK, so I looked at the Service Data and it looks like IC2007 is the one that controls the motor control board and was the one you were talking about possibly being bad am I correct?
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#28
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It's possible but without doing some testing with a service manual, scope and DVM don't get me to lying!
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#29
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Since I now have my 'scope figured out how to work it I'll see if I can figure out what's what on the VCR. |
#30
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Be sure to check for a shorted electrolytic capacitor somewhere in that motor drive circuit too, could be something as simple as that. As old as it is that's a possibility.
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Audiokarma |
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