Re: Roberts R66 diode MR2
Just a note here.
The OP says he replaced the LT caps, C28, 29 and 30.
I guess he is working from the 'service data' red book diagram and not the 'trader sheet'. They are not quite the same numbering. Nor the dropper chain R numbers.
Davewantsone did you read the Modifications section of General Notes on the Trader Sheet?
It refers to an additional length of resistance wire used to build up the value of R16 (trader number) to 5.4 ohms from 3.9 ohms.
That could be the extra wire you have noticed perhaps.
If that is the case it needs to be included in the ''series chain'' to drop the LT volts.
I would carefully check the chain is wired correctly - someone might have altered it in the past to boost the LT volts due to MR2 problems (or get a little more life from the DK92?).
Alan
|