Phase Linear Model 300 Series Two overheating on one side at low volumes

Folks probably wouldnt like my response if their donation came with strings..
 
I'll try to ferret them out!

While I wait for parts... I am struggling with the binding posts. The holes are too narrow for 12 gauge wire and they don't seem to work w/ standard banana plugs or have room for most spade plugs. What's a good spade connector for this old style binding post?
 
I've got K's and I run 10 ga.
JT, post a pic. It's been years since I worked on a 300. Rattle my memory here..
 
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jtatknox said:
I'll try to ferret them out!

While I wait for parts... I am struggling with the binding posts. The holes are too narrow for 12 gauge wire and they don't seem to work w/ standard banana plugs or have room for most spade plugs. What's a good spade connector for this old style binding post?
Click to expand...
Are the binding posts different on a 300 compared to the others?
I use banana plugs on all my PL amps (400,700&D500) and I use 10 gauge wire.
12 gauge I consider the minimum and only for short runs.
 
I will try these pins!

Project update: transistors arrived today. It was not easy to get in there, but I got the transistor replaced on the first try and now the amp is working perfectly!

I biased both sides and all is well.

I am waiting for new filter capacitors from DigiKey. Recommend checking bias again after replacing filter caps?

Another Phoenix rises!!!
 
laatsch55 said:
Always check bias when ya got er opened up...
Click to expand...

Good advice. I will check bias in both units when filter caps get here.

On an unrelated note, I spent the afternoon replacing filter caps and installing Don's fantastic speaker protection relay in the Phase Linear 400 I have had sitting for 6 months. Very happy with how it all turned out except I can barely turn it up enough to make the VU meters dance before I get into noise complaint territory!

Can anybody recommend touch-up enamel for the VU meter surrounds?
 
jtatknox said:
Good advice. I will check bias in both units when filter caps get here.

On an unrelated note, I spent the afternoon replacing filter caps and installing Don's fantastic speaker protection relay in the Phase Linear 400 I have had sitting for 6 months. Very happy with how it all turned out except I can barely turn it up enough to make the VU meters dance before I get into noise complaint territory!

Can anybody recommend touch-up enamel for the VU meter surrounds?
Click to expand...
I and others just use a black sharpie magic marker, others bead blast them clean and spray paint.
 
George S. said:
I and others just use a black sharpie magic marker, others bead blast them clean and spray paint.
Click to expand...
Or take paint stripper to them to get them down to base metal and then spray paint with color of your choice.

Perry likes lime green...
 
jtatknox said:
Good advice. I will check bias in both units when filter caps get here.

On an unrelated note, I spent the afternoon replacing filter caps and installing Don's fantastic speaker protection relay in the Phase Linear 400 I have had sitting for 6 months. Very happy with how it all turned out except I can barely turn it up enough to make the VU meters dance before I get into noise complaint territory!

Can anybody recommend touch-up enamel for the VU meter surrounds?
Click to expand...
Jani, ( my wife) uses a textured black...kinda cool stuff, just rattle can black man..
 
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