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#10
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i check those two resistors in the plate circuit R603 and R604.
R603 is coded as an 82k which was on on the CTC-5 but shown as a 100k on the N chassis. I checked it out of the circuit and it had drifted up to about 94k so I left it alone. the R604 which is coded as a 39k tested at 60k. Its 10% banded so I went ahead and replaced it with a 39k (tested at 41k) from my stash of old carbon comp resistors. there was also a 1000pf cap that was from the junction of those two resistors to ground, If it leaked it would really mess things up, so I pulled it out and tested it. It tested perfect with no leakage so I put it back in. It was one of the red dominos, but I don't like to replace parts that check out perfect. The only other caps in on the H board that were not replaced were a couple 82 pfs that were in the AFC circuit. As I was having no issues with sync I left them alone. I really need to reinstall the chassis and see where I am just need to make some room in the shop as I don't want to work on it out in the garage. |
| Audiokarma |
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