[Ron Ramirez]

So it's only been almost 10 months since my last post...

You may recall that I had traced distortion in my 700-T to the control amplifier board.

So last night, I pulled a control amplifier board from a junk 440-T. The board is very similar to the 700-T board; I felt the very slight differences would not make any difference.

Here are the two boards:

[Image: http://www.philcoradio.com/images/phorum...00-T_4.jpg]

The 440-T board is at the top in this photo, with the original 700-T board underneath it. I put new electrolytics into the 440-T board. Did you notice the two jumper wires in the middle of the 440-T board where the 700-T has two white capacitors? Well, I removed the jumpers from the 440-T board and put two capacitors in place of the jumpers. The capacitors are needed in the 700-T as part of the low filter switch circuit, something the 440-T does not have.

I tested the transistors in the 440-T board and all were OK, so I put them back into the board.

So I installed the 440-T board into the 700-T this morning...and then tried it out with headphones.

Verdict: Sounds good with no noticeable distortion.

Just my luck, though, in the process of installing the 440-T board into the 700-T, somehow I managed to break the Stereo Beacon incandescent bulb.  

So, my dear wife agreed to pick up a couple "grain of wheat" bulbs from the Jasper Radio Shack (which is not on the list to be closed, incidentally). Later today, I will install one of them and if all is well...I'll button this set up (finally)!