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Old 02-21-2022, 09:48 AM
vortalexfan vortalexfan is offline
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Join Date: Sep 2018
Location: Northern Indiana
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Quote:
Originally Posted by starbond View Post
Oh boy, maybe I'm biting off more than I can chew haha. I wouldve hoped the primary side was the issue as I have only been focused there BUT maybe there's something obvious on the secondary side I have missed.
I'm no electronics pro, but this is the first time I've dealt with a bad power supply, in my limited years of working on VCRs, tape decks, receivers, etc.
It will be rewarding to get it working again, if not to see all the lights go on and putting a tape in and seeing the wondeful picture. Now if it turns out there's also a tape transport problem, well....

I want to thank all of you and Ed in particular for the help so far. I can give values and pull parts and replace them but where i struggle is intpresting what the values mean, and how to trace the board to the issue as I have no EE experience beyond self experimentation and all the folks at AK and VK

Vortex,
I admit i have no knowledge of diodes beyond that its kind of a one-way power direction-er, but I have seen conflicting information that varies from "it should be OL in reverse" to "getting a reverse measurement is OK"
Now that being said, these diodes are small and only have a colored band around them if anything, is there an easy way to identify how it should be replaced without a schematic?


Lastly, when I removed the bridge rectifier and turned the power on, there was no fuse blowing. Probably doesnt mean much but its the only time a pulled component prevented a blow (this was pre dim-bulb)
The band side of the diode is the cathode side (if I remember right) and that's the side that the voltage goes into and is supposed to have no voltage on, the non-banded side is the anode and that's the side the voltage comes out of and is supposed to have voltage on.

I hope that helps, and if I have the terms mixed up, feel free to correct me.
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