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Rotel RTC-940AX tuner/pre-amplifier repair

mygoggie

mygoggie

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Joined
Jul 10, 2023
Messages
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Location
Port Elizabeth
Seems like this Rotel RTC-940AX tuner has a fried transistor. Does anyone have any experience in repairing these tuner/preamplifier?

I found a very similar thread on AudioKarma
 
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I got the service manual from https://elektrotanya.com/rotel_rtc-940ax_sm.pdf/download.html

It's a beastie...

In the linked manual there are some notes added by a good Samaritan around the PSU transistors. Is this where you suspect trouble? Apparently some parts got covered in glue and I guess this affected cooling.

If this doesn't solve it let us know which voltages are missing or wrong and maybe we can figure something out. There's a lot going on in there.
 
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