Foreplay 3 amp no output (Paramount)

[Mr. Self-destruct]

Yes soldered what I touched. Still looking for broke. Wires. Speaking of broken....300b socket. Maybe terminal is grounding out. Ceramic is broken see pic.

 

[Paul Birkeland]

You can very gently pull the tube out of that socket, then let super glue drip into all those cracks to keep it in place. 

You could remove all the wires from that socket and take the socket out and it wouldn't cause the problem you showed on your video.

 

[Mr. Self-destruct]

I will do glue. I think I have an extra socket. There were spare parts. So can i turn amp on without the 300? Is there anything I absolutely should not do? I wouldnt want to damage further. 

 

[Paul Birkeland]

Yes, you can run the amp without the 300B, but there isn't any reason to do that.  I'm just saying not to worry too much about the socket, as I believe you have a broken wire. 

 

[Mr. Self-destruct]

Cool thanks. Still can't find break. Here's another short vid. A little different result than last vid. Most likely picking up manuals today. https://youtu.be/O833ToxxOrc

 

[Paul Birkeland]

Sure looks like a broken wire.

 

[Mr. Self-destruct]

Received manuals today. Any info on the original pricing of foreplay 3 and paramounts? Thanks for any info

 

[Paul Birkeland]

The pricing moved around a bit over the years.  You can use the internet archive to view our pages over the years: https://archive.org//  The products in question were both available around 2005 and stayed in the product lineup for quite some time.

 

[Mr. Self-destruct]

So cool! Thanks

 

[Mr. Self-destruct]

While amp is funtioning

Pc2
4 - 456vdc jumper to 6
5 - 468vdc
6 - 456vdc
10 - 444 vdc

Fc1

1- 66
2 -67
4 -67
5- 67
6 -72
7 -72
9 -72
10 - 72

Ot1
1-0vdc
2- 0vdc
3- 0vdc
5-69vdc
6-69vdc

300b
67 vdc
72 vdc
455 vdc
0 vdc

 

[Paul Birkeland]

There's no issue with any of those voltages. 

 

[Mr. Self-destruct]

Thank you.. Yes. The amp is working. When it pops off, as soon as I touch any hi voltage metal for reading it'll come on.

 

[Mr. Self-destruct]

The transistor casings are even getting 400 plus volts. Is that normal?

 

[Mr. Self-destruct]

These transistors

 

[Paul Birkeland]

You have the manual right?  It lists the voltages.

I've labeled a few on one of your pictures.  If you have about 400V on both metal tabs of both transistors, I would question whether the 9 pin tube is lighting up on the top side.

 

[Mr. Self-destruct]

Yes I do have the manual and yes I am getting the volts that you Labeled on the photo. When I turned on the amp only the top left LED was illuminated (not working) as soon as I put my meter on tab 5 of PC2 to get a voltage reading it turned on (working). Read 477 vdc. Tapped 5 again, amp stopped working.  Same voltage reading. Tapped again. Working. 

 

[Mr. Self-destruct]

.

 

[Mr. Self-destruct]

also getting a faint Morse code static interference on the speaker output.

 

[Mr. Self-destruct]

When the amp is not working and one LED lit I am not getting the 225 V on the transistor on the greenboard

 

[Mr. Self-destruct]

But as soon as I tap the round transistor it comes to life