In Reply to: Cheap PAS 3 Upgrade posted by Kozzmo on October 24, 2003 at 12:04:36:
1) Redo the heater supply. Pick up some diodes and get rid of that selenium rectifier and replace the caps with bigger ones or at least newer ones. Then remove the on/off light from the socket front left of the preamp. Might want to get a terminal strip. Costs around 3-5 bucks total
2) Radio Shack sell an Alps 100K stereo pot for the volume control. Remove and replace old one doing away with the loudness circuit. Costs around 3 bucks.
3) Remove tone controls. Costs nothing
4) Clean all the controls you plan on keeping such as the selector switch and balance pot. Costs whatever you have to pay for contact cleaner.
5) Replace quad cap. You can make one 10 uF/450VDC and three 40 uF/450VDC caps work. Mount the little 10 uF directly on the rectifier and mount the three 40 uF where the old quad cap was with the leads insulated and going throught the chassis. You can use a hose cap to hold them all together and maybe some silicone to glue them in place. Costs around 10 bucks.
6) FIRST, download the instructions for the above work from Joe. Costs nothing:)Next time don't pay so much. I got my PAS for 40 bucks:) After you get done with the above you might question building one from scratch. I like the PAS better than the Foreplay personally. Next round of modes would be replacing resistors and caps which can be done for under 20 bucks.
Good luck,
Russ
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Follow Ups
- Re: Sure...try the following - Russ57 13:02:53 10/24/03 (7)
- Re: Sure...try the following - Flyquail56 05:16:39 10/25/03 (0)
- Re: Sure...try the following - sinewave 14:48:06 10/24/03 (0)
- Re: Tubes - kintyre695 13:54:10 10/24/03 (4)
- Re: Tubes - Kozzmo 09:57:24 10/25/03 (3)
- Re: Original tubes are Telefukens and... - Russ57 15:58:01 10/25/03 (2)
- Re: Original tubes are Telefukens and... - Kozzmo 20:26:56 10/25/03 (1)
- My Experence/Tubes/Mods - marcus2114 08:36:57 10/26/03 (0)