I assume the bass pot is 710kFreddie_Freekowtski wrote:peterh wrote:I contacted the seller "re-engineer" and asked if the potentiometers in the
pas potentiometer kit. Did they have correct values .
The answer was not to my satisfaction :
The question you're really asking is:
Are they the same resistance as the
The answer is:
If they were, there would be no need for the
Thanks for stopping by...C
In other words he refuses to tell what he sells.
Maybe better to skip this seller.
He was quite problematic during communication. His instructions for troubleshooting werent exactly clear, and they did did change...I had reported a value across pins 5 that was in the 30's and he freaked. sent back explicit step by step instructions which differed from the first set which stated to take out the tubes and power unit off....which then changed to remove rectifier and 12ax7's in the phono board, power on and measure. We then got an acceptable value, at least to him, of 28.66 VDC. He has not replied since we got the phono stage working by bypassing his buffer. We followed his supplied instructions to the letter and still had a wire that originally ran from point 1 on the line board to RCA ground. His instructions never mentioned what to do with it.
The brightness issue still exists. When I was listening, it seemed to become more of an issue as the thing was running. The line stage never experienced that issue. Another poster in a different forum said the selector switch could be at fault. I wouldnt be surprised if it was. It was literally frozen in place when I got the unit. My guy had to soak it in something to dissolve the gunk that crippled it. I am not a fan of its feel, it doesnt seem to sit properly in the phono spot. slight turns to either the left or right can cause a channel to drop out completely. The line stage, on spare, seems to feel like it rides its groove better, but you can still cause noise and dropouts by the slightest turn. Edited to add that all resistors were within 10% tolerance of their original values. Bass pots read 71.2k for left and 71.5 k for right..now treble is 368.6k for left and and 345.2k for right.
But, as you suspect, if the selector has been troubling, yes that may very well happen, and
the riaa equalisation is done via a few of it's connectors.
Cleaning the selector is possible, with care and some mild cleaing oil. 5-56 comes to my mind,
i'm sure better advices may com ( peter ?).
The selector is delicate but not impossible to get working again. The good thing
with the selector ( that none of thereplacement parts offer) is that it shorts unused
inputs to proevent them from "bleeding throu". This bleeding can be quite annoying
in an amp that lacks this shorting feature.