VSAT88
Veteran and General Yakker
Hi, she was a working amp until I got scarred by some folks who said I was using a time bomb. Might have been true as the filter caps were stock and no bias readings were ever took (by me anyway). She had almost no DC offset in one channel and very little (well within range) on the other. I played it many many times in fact off and on for several years without any trouble whatsoever. I read on line a lot of differing opinions about it and one that made sense to me was that all the OP TX should be the same. I read the service bulletins and what I read said so as well. I decided to check a few things and found that the OPT were not all the same so after that I decided to replace a few things and add a few things. I bought the new filter cap set from White Oak. I bought the DC relay kit from Mr. Don and put it together with a parts order from Mouser. I called myself following the instructions exactly. I made another order before from Mouser to cover all the lytics (and only the lytics) for the main board/driver board. I installed them all myself of course. I put new silica under each OPT with wakefield in between each, not too little, not too much, just right. I checked all the resistors and found them to be well within range except a for a few and when I found those few in a set of four were a bit out I replaced all four. Some of this was tedious work for me as I am no longer a young man and I cannot see as well as I use to. I tried to do my best. I am going to post some pics here and if needed I will post more of whatever is asked. I hope you find my photographs good enough to see everything well. Now, the problem or may well not be a problem, I do not know. After all the work (including a new bridge rectifier by the way) when I bring it up on the DBT/veriac the bulb pulses. I stopped then and decided to ask for help. Yes, when I start turning the veriac up with the amp plugged into the DBT the bulb goes really bright then back to dim, really bright then back to dim. I have never encountered something like that before so now I ask kindly for your help. Jim.
