Need help to repair two phase 400 amps

LarryD · Jan 20, 2016

Ok I see said the blind man!

laatsch55 · Jan 20, 2016

Where is the decimal point? And are your hands touching the bare part of the mneter lead or the wire?

LarryD · Jan 20, 2016

laatsch55 said:

Yes , My hands were touching. Let me go get some alligator clips. I will redo it ,Lets take 20 minutes ok?

laatsch55 · Jan 20, 2016

That's fine...

LarryD · Jan 20, 2016

I TRIPLE CHECKED LEE!!
RED C / BLK B
L O
R O
RED C / BLK E
L O
R O
RED E / BLK B
L 0
R O
BLK C / RED B
L .916
R .923
BLK C / RED E
L O
R O
BLK E / RED B
L .918
R .924

laatsch55 · Jan 20, 2016

Ok. We'll call those good. Do you have any 5 minute epoxy?

LarryD · Jan 21, 2016

I also wanted to tell you I removed the face plate. I am working in limited space, and I cleaned the hell out of everything. Even down to Qtips. The amp looks great. Need to get caps and light board and speaker protection. Do you know what the rev changes were on the later boards? Hey I am going to have to call it for tonight. I have a doctors apt at 7:30. If you want me to do something after my apt, leave me a message. I could de solder the board if you want me to? Good night and I will try to make things easier tomorrow. Thanks Lee

LarryD · Jan 21, 2016

laatsch55 said:

Yes I do.

LarryD · Jan 21, 2016

Off topic but I wanted to ask you about my other amp, just one question is all. When I plug it in and feed it signal only the left channel play's until I boost the volume. the only thing I could think of is possibly a bad input rca jack? And it sounds all static like. And what would you like me to do with the epoxy?

laatsch55 · Jan 21, 2016

LarryD said:

I want you to take pics of the board and wiring like I asked you too so we have a reference when you are ready to install the new board.

With the epoxy I want you to glue the fiberglass sleeves that are on the bias transistor wires to the backwall. NOT THE WIRES, but the sleeves the wires run through so you do not break the leads off the bias transistors. It is very easy to do , they are brittle and won't take much bending. Gluing the sleeves down takes about 90% of the flexing out of the wires and leads.

laatsch55 · Jan 21, 2016

LarryD said:

I am not interested in talking about a second amp until if and when we get you through this one.

LarryD · Jan 21, 2016

laatsch55 said:

I want you to take pics of the board and wiring like I asked you too so we have a reference when you are ready to install the new board.

With the epoxy I want you to glue the fiberglass sleeves that are on the bias transistor wires to the backwall. NOT THE WIRES, but the sleeves the wires run through so you do not break the leads off the bias transistors. It is very easy to do , they are brittle and won't take much bending. Gluing the sleeves down takes about 90% of the flexing out of the wires and leads.

Ok, I will get on it with pics as well. Now the pics should be concentrating on the wires to the board.?

LarryD · Jan 21, 2016

laatsch55 said:

Ok, I don't blame ya Lee. See ya tomorrow, take care

laatsch55 · Jan 21, 2016

LarryD said:

I told you how I wanted the pics in a previous post, but here goes again. I want pics that show the wires going from the board to the backwall. I want to be able to trace a wire from the board to where it ends up on the backwall in the same pic...please...

If you are done for tonight that's fine.