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That could cover a LOT of models! There were the Hitachi-made VCRs with either discrete components in the DC-DC converter circuit, or had the DC-DC conv. module, either would fail from bad caps. Then there were the Samsung-made RCA-GE units with capacitors failing in the power supply. Thompson issued a rebuild kit for those. The driver transistor would often fail in those too. I would take that out and check the gain of the transistor since it wouldn't actually go open or short and read fairly normal with simple testing with a meter, and replace it as needed.
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For the Samsungs, there were so many Goldenrods about them, they made a booklet identifying the changes that were to be made. Rectifiers, caps, spacer on a gear, and a check of the mode switch type. I have the booklet here somewhere, a freebie from RCA that came with our service lit subscription. All of the goldenrods I have are on microfiche, so not easily transcribed. Last time I printed from a microfiche, the ODU library was getting 70 cents a page... The later VCRs with the VEPSXXXXX power supply modules, we got the kits from MAT or RCA, save for warranty work, where RCA made us swap supplies. The duds went back to RCA, so we had some fun and marked them with a small knife. After rebuild in Mexico, they were issued as new stock - proof that even RCA passed used goods off as new stuff. No reconditioned stickers like the modules and tuners - just a sealed bag with a rebuilt power supply. They paid 0.7 hours labor to replace the supply and more than that for "processing" the claim. Good money for an easy fix. Lightning killed them all - but RCA honored the warranty.
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Brian USN RET (Avionics / Cal) CET- Consumer Repair and Avionics ('88) "Capacitor Cosmetologist since '79" When fuses go to work, they quit! Last edited by Findm-Keepm; 09-29-2017 at 06:39 PM. |
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OP/MIPS, I checked my Sony ESI library CDs (23 of them...) and haven't found a service manual. Odd unit, or too new for my stuff, which ended in 2005. A google search turned up the usual manual sellers, none of which showed a front page of the manual - handy to search with, as the Sony part number (9XXXXXXX number) is usually on the front page.
Union Electronics or Encompass might still have one if you need a manual, but they charge $$$$ for most Sony manuals.
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Brian USN RET (Avionics / Cal) CET- Consumer Repair and Avionics ('88) "Capacitor Cosmetologist since '79" When fuses go to work, they quit! |
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I am in the process of saving my pennies right now for the service manual for an unrelated Pioneer LC-V300.
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Audiokarma |
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