SSlmixed.com Forum
Tech discussion => 4K,6K,8K Series => Topic started by: tlmaen on May 22, 2026, 10:30:49 AM
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Hi,
I have one Channel where the Level ist down by about 10db if EQ and INS PRE is not activated.
I tracked the problem down to the 82E11 Group Amp Card. When I use a card from another Channel, the Problem is gone.
I just can't get my head around it... I don't find any clues in the Schematic of the 82E11 handling any of the EQ/INS switches/Signal
I removed all of the ICs on the 82E11 until the Signal was gone.
Only T5 and T7 had to be on the Board to pass signal.
I swapped them out, just in case, replaced the only two 100uf Cīs in the Signal path, nothing changes.
The Level is still down and has a few more overtones.
Also the Sinewave on the Scope was not a pure Sine anymore.
The attenuated signal can be traced back to the Input Amp, and to the VCA Card, but they work fine if a Group Amp Card from another channel is in Place.
(Its an very early E Series, and the Group Amp Card has a Sub Board on top for the supercue Function).
Any help is much appreciated!
Thanks,
Tilmann
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I'd replace all the caps, especially if they are orange. Make sure nothing has eaten any of traces.
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Thanks, definitely will do that and see if this is the problem.
My Console is so old, it has almost no electrolytic caps in it, all tantalum Cīs
There were a few orange ones, I replaced most of it.
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Replace the tantalum caps also. They have a habit of shorting. Later versions of the SSL's didn't use them. Good luck.
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Completely recapped the Card, that fixed the Problem!
Thanks Dave for pointing out the obvious...
Wasted a few hours to find it.
Next time if a card has a fault or problem, I will recap them first.
Thanks,
Tilmann