Hello! I have a Kendo VR5442-02 VCR from the late 90s. Inside, the circuit board is labelled (Daewoo) DV-K879D, for which I found a service manual but which unfortunately doesn't go into the mechanical aspect.
[Attachment 56576 - Click to enlarge]
From the knowledge I've gained over the last few months, it generally seems to be in good shape. It does however have issues when rewinding a tape. I first replaced the belt (replaced with a square belt 74,5 mm diameter, 2 x 2 mm, in case someone else with the same machine should find this post). That did seem to improve things as it now seems to work as it should when rewinding commercial tapes (I guess they are shorter lengths, like 120 min), but when I try to rewind 240 min-tapes (of which I have many) the tape starts to skid downwards the pinch roller and ultimately the tape gets mashed (unless I'm quick enough to stop the VCR before).
[Attachment 56578 - Click to enlarge]
The pinch roller is pretty shiny and feels smooth to the touch, so I'm leaning towards that it doesn't get enough traction on the longer tapes and needs to be replaced. However, I'm unsure where to find a replacement. I managed to access the pinch roller and measure it.
Height: 17 mm
Diameter: 15 mm
Inner diameter top: 6 mm
Inner diameter bottom: 7 mm
[Attachment 56579 - Click to enlarge]
What puzzles me is how the pinch roller looks inside, with 2 different inner diameters and some kind of separator inside it. When mounted, it has a white plastic piece on top of it which holds it in place. Does other pinch rollers look like this or is this a custom variant?
[Attachment 56580 - Click to enlarge]
What are my options? Suggestions are most appreciated.
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That is normal pinch roller construction.
To figure out whether the pinch roller is your problem, you might want to first apply some rubber rejuvenator. It is not a permanent fix, but it often temporarily restores enough pliability to the rubber that it will function normally for awhile.
If you find that you get an improvement and want to replace the part, there are places which rebuild pinch rollers, idler wheels, etc. However, it is usually a $50-80 investment.
There must be some repository of parts somewhere from all the service shops that used to repair VCRs. I was looking for a PE turntable idler wheel a month ago and could only find the rebuild services, but you may have more luck with your part.
Thanks for the replies. I researched video pinch rollers some more and by figuring that the correct inner diameter is likely 3mm (not in the opening but in the center), I've ordered one from a german seller on ebay (as I'm located in Europe) for around 15 euro in total.
If that part ultimately doesn't work out, I'll have to think if I want to try a pinch roller rebuild service (I've only found one in the US so far).
Otherwise if I can't easily fix it, my thought is to buy a better VCR, one which has better documentation and repair parts. I don't know if Daewoo is even considered any good or not, but besides the aged rubber parts it seems to work fine and it's just a VCR I've inherited.
Daewoo is a disposable player.
https://fixyouraudio.com/instructions/pinch-rollers/ ). I don't own and haven't found a rubber rejuvenator-product in the EU so far (I'm sure it exists though) and from what I can tell it's some pretty toxic stuff and would cost me about the same as getting the new pinch roller (from the US-prices that I've found). So if it's only a temporary fix, I may be better off with a new pinch roller. Then to learn if it really fits and figuring out if it indeed is the problem or something else.
Well, here's an update - the part came in the mail a few days ago and I also figured out that I only need to remove 3 screws in total to get the machine open and access the pinch roller (a lot easier than when accessed the last time). Even though the inner part is different (if you give the original part a spin, it spins for probably 30 seconds, this one less than a second), the pinch roller still fits and the rubber is fresh - and that seems to make all the difference. Now I am able to rewind the tape without any trouble (in fact I rewinded all the tapes I had so I could store them properly) and have used the VHS for a few hours today. So it seems to be a success!