Hello,
I have a Rotel ra-940bx whose left channel works intermittently. I noticed that the tone switcher might be the cause of the dysfunction as if I play with it the sound sometimes comes back.
Following the suggestion of an amplifier repairman, I tried to spray some wd-40 lubricant and it worked for a while but now the problem is back.
This amplifier is not particularly valuable, but I am kind of fond of it. I would like to try replacing the switcher, to see if it fixes the problem.
I am in no way an expert and I am a bit clueless on where I can find the parts. I searched a bit on the internet but the shops I found did not have the specific part (I would have been surprised otherwise, to be fair).
I would be grateful if you know any shop that might have these type of things or if you could point me in the right direction for a more successful search.
Thank you
Duccio
I have a Rotel ra-940bx whose left channel works intermittently. I noticed that the tone switcher might be the cause of the dysfunction as if I play with it the sound sometimes comes back.
Following the suggestion of an amplifier repairman, I tried to spray some wd-40 lubricant and it worked for a while but now the problem is back.
This amplifier is not particularly valuable, but I am kind of fond of it. I would like to try replacing the switcher, to see if it fixes the problem.
I am in no way an expert and I am a bit clueless on where I can find the parts. I searched a bit on the internet but the shops I found did not have the specific part (I would have been surprised otherwise, to be fair).
I would be grateful if you know any shop that might have these type of things or if you could point me in the right direction for a more successful search.
Thank you
Duccio
Use a small, brief spray of this in all the switches and pots. Exercise each one after spraying.
If one still has a problem, repeat, but still use a small amount.
CAIG Laboratories D5S-6 CAIG DeoxIT Contact Cleaner, 5% Spray, 5 oz | Sweetwater
If one still has a problem, repeat, but still use a small amount.
CAIG Laboratories D5S-6 CAIG DeoxIT Contact Cleaner, 5% Spray, 5 oz | Sweetwater
WD-40 is low-odor kerosene. It does OK for short-term sealing of cracked spark wires. It is a short-term lubricant. It evaporates in days/weeks, so you have to do it again. Each time it collects dirt and works it further into a joint or keyhole. The only real use seems to be to soften some types of tape-glue.
There are MUCH better cleaners or lubricants. CAIG is well-regarded in audio circles. Yes it seems expensive but a teeny droplet is a long-term fix for many intermittents.
There are MUCH better cleaners or lubricants. CAIG is well-regarded in audio circles. Yes it seems expensive but a teeny droplet is a long-term fix for many intermittents.
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