"N_Cook" wrote in message
...
It would be nice to find a schematic for this specific variant , but only
one Google Ref for the number on the end face label
JCM2-20-06

I'm wondering if there is any significance in the bodged 1/3 W R
replacements
R70 of 5K6
R7 of 5K6
R48 of 100K

unfortunately none of these numbers agree with any JCM2000/ DSL schemas
that
I have.
Similarly I cannot find the 2K2 HT line dropper for (a) half of V1
mentioned
on these schema





This site mentions people finding 220k grid resistors (R70, R7 etc) instead
of the 5k6 resistors they expected, along with other details with regards to
this board problem.

Looks like someone may have tried to sort this problem out before, but
didn't replace the PCB?

http://www.lynx.bc.ca/~jc/TSL122.html



Gareth.