Hello!
I have Tube-Tech SMC2B Multiband compressor here.
The unit works normally for approx. 2 hours, then the stereo image starts to hang to the right. Even with BALANCE, you cannot straighten it to the center (the difference is approx. 5dB). When I turn it off and it cools down (for approx. 10 minutes), it works normally again for a while.
I opened the unit and changed the tubes between the channels (L / R). And the same thing happens after about 2 hours, the image starts hanging to the same - right side.
Then I measured voltages, which are stable with very little deviation between channels.
I then looked at the unit with the IR camera as well. I found out that on the power supply part one resistor (I think 470 Ohm) is heating up abnormally! The temperature is over 150 C! Also, the diode bridge has a temperature of around 100 C. Isn't it rather too much? (I don't know if this is normal?!? or if this is the cause of the "stereo image" problem after a certain time?)
If I remove the tubes, it does not heat up at all.
Does anyone have a schematic or any ideas?
Thanks!!
Tadej
I have Tube-Tech SMC2B Multiband compressor here.
The unit works normally for approx. 2 hours, then the stereo image starts to hang to the right. Even with BALANCE, you cannot straighten it to the center (the difference is approx. 5dB). When I turn it off and it cools down (for approx. 10 minutes), it works normally again for a while.
I opened the unit and changed the tubes between the channels (L / R). And the same thing happens after about 2 hours, the image starts hanging to the same - right side.
Then I measured voltages, which are stable with very little deviation between channels.
I then looked at the unit with the IR camera as well. I found out that on the power supply part one resistor (I think 470 Ohm) is heating up abnormally! The temperature is over 150 C! Also, the diode bridge has a temperature of around 100 C. Isn't it rather too much? (I don't know if this is normal?!? or if this is the cause of the "stereo image" problem after a certain time?)
If I remove the tubes, it does not heat up at all.
Does anyone have a schematic or any ideas?
Thanks!!
Tadej