Session 400 Filter Caps

[Bob Snelgrove]

Can you tell me what caps and where to get them?

Bob

[Bob Snelgrove]

I replaced all of the Molex connector pins on my 1974 Session 400. Over the years, I've always had problems with them losing contact or loosening. Then had to pound on top of the cabinet to "sometimes" regain connection. I also soldered the pins to the wires instead of using the factory crimp. The new pins and soldering the wires to the pins should help to keep it more dependable. I replaced the filter caps and other smaller caps and added the bypass caps. The amp is dead quiet and sounds better than when I bought it new in 1974.

Thanks, Dennis

Just need to locate a source for those caps

bob

[Dan Robinson]

My LTD 400 is working again!

I tested just the power amp, as Ken suggested, into a monitor with (cheap) speaker. All good. Re-connected the pre-amp to power amp signal, and it is working.

I may have the reverb Send and Return signals swapped. Otherwise, it's all good.

Thanks for all of your helpful advice.

Dan

Did you ever say what the problem/fix was?

bob

Hi bob.

I was surprised to see updates to this post. It has been a long time, and TBH I don't remember. I sold the amp a few years ago. Great amp, but I don't play out much, and I wasn't willing to deal with its heft.

I learned some things during my troubleshooting, but I should have just sent the chassis back to Peavey.