Studio Pre troubles

[ReidarNikolai]

Hi all

I probably have an LDR-problem.

It is a come/go problem - sometimes it is powering up OK but after a while i get:
Noise, standbyswitch is "bypassed" - very thin and weak signal.

So: tapping on the top side of R211 - sometimes - makes the amp work correctly for a while.
That resistor is connected to LDR 2.
I will replace that resistor - but maybe also the other LDR resistors also?

Does anybody have a list and chart over which resistors that needs to be changed?
Also what type of resistors are used and their size in W.

Thanks in advance
ReidarNikolai

 

[synaesthesia]

Do the LDRs first, search down I think I posted on how I replaced mine. That resistor you are tapping might just be resoldered.

 

[ReidarNikolai]

Thanks for the heads up (and pictures).

Will try this ASAP

Get back when I have tried replacing the LDR´s.

ReidarNikolai

 

[ReidarNikolai]

Replaced LDR 1, 2 and 3.
Everything is working as it should.
I will keep it open for a while - I am gonna give it a cap-job while I it is out of the rack.

Heads up about availability for those LDR´s the firm making them in the States have stopped doing so.
You can find cheaper ones on eBay from China - I don´t know how good they are.

Thanks
ReidarNikolai