Foreplay 3 amp no output (Paramount)

Rob C · 256305

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Offline Paul Birkeland

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Reply #45 on: September 10, 2021, 07:57:36 AM
Sure looks like a broken wire.

Paul "PB" Birkeland

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Offline Rob C

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Reply #46 on: September 13, 2021, 05:28:32 PM
Received manuals today. Any info on the original pricing of foreplay 3 and paramounts? Thanks for any info


Offline Paul Birkeland

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Reply #47 on: September 13, 2021, 05:52:19 PM
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.

Paul "PB" Birkeland

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Offline Rob C

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Reply #48 on: September 13, 2021, 08:12:01 PM
So cool! Thanks


Offline Rob C

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Reply #49 on: October 18, 2021, 11:35:18 AM
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


Offline Paul Birkeland

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Reply #50 on: October 18, 2021, 11:49:35 AM
There's no issue with any of those voltages. 

Paul "PB" Birkeland

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Offline Rob C

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Reply #51 on: October 18, 2021, 11:55:29 AM
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.


Offline Rob C

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Reply #52 on: October 18, 2021, 12:53:40 PM
The transistor casings are even getting 400 plus volts. Is that normal?


Offline Rob C

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Reply #53 on: October 18, 2021, 12:54:34 PM
These transistors


Offline Paul Birkeland

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Reply #54 on: October 18, 2021, 01:14:02 PM
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.

Paul "PB" Birkeland

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Offline Rob C

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Reply #55 on: October 18, 2021, 02:14:07 PM
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. 


Offline Rob C

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Reply #56 on: October 18, 2021, 02:16:37 PM
.


Offline Rob C

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Reply #57 on: October 18, 2021, 02:20:39 PM
also getting a faint Morse code static interference on the speaker output.


Offline Rob C

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Reply #58 on: October 18, 2021, 02:27:23 PM
When the amp is not working and one LED lit I am not getting the 225 V on the transistor on the greenboard


Offline Rob C

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Reply #59 on: October 18, 2021, 02:27:53 PM
But as soon as I tap the round transistor it comes to life


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