SSL EQ & DYN & AMP Cards

[atticmike]

Gotcha guys, I'll swap those as soon as possible. Just wanted to make sure that I talked everything through before doing something right in the middle of figuring stuff out.

Does it have to be the exact same NE5543N or can I use a different one? I got couple of NE5534N 5CG 1115G lying around. The one in the circuit is a NE5534N FNP2394 9331VJ.

[sintech]

Any 5534 is cool for IC4 and for IC8 you can also use an LM324N as an alternative to the CA324E

[atticmike]

swapped the small IC's but nothing's improved so far. Also, during measuring stuff i came off leg 6 and shortened with the one above I suppose as the output notably crapped out and it sparked. Everything's still working, even the IC I swapped later on I did the measuring on though. Did this happen to you once in a while and was that really bad for the circuit or rather something that can happen once in a while if it's just for a second?

The only thing I didn't swap were the long Ics which I had to order.

[marcmozart]

Having the exact same problem with a dynamic card at the moment - no audio but crazy X-Mas Lights going on! Did you end up solving your problem?

[sintech]

The audio path is very short and easy to scope through. Do your lights look as you'd expect? or crazy wrong?

[marcmozart]

Crazy wrong - like X-Mas in Las Vegas http://forum.sslmixed.com/Smileys/default/cool.gif

[sintech]

Crazy wrong - like X-Mas in Las Vegas http://forum.sslmixed.com/Smileys/default/cool.gif

The problem then is most likely in the sidechain, and the VCA is clamped down not letting audio pass.

[kilmister]

Crazy wrong - like X-Mas in Las Vegas

Hi!

Just fixed a channel with same symptoms, no audio, all dynamic leds bright on.
Negative voltage rail 2A fuse was blown on the mother board. No any reason for it, perhaps it was just old and tired.

-Paavo