Resetting the BIAS AND GAIN POTS on the PU-7/PU-8-11 board.

General information to do with the PlayStation 1 Hardware. Including modchips, pinouts, rare or obscure development equipment, etc.
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StevieGoodwin
Curious PSXDEV User
Curious PSXDEV User
Posts: 33
Joined: May 2nd, 2017, 9:15 am

Resetting the BIAS AND GAIN POTS on the PU-7/PU-8-11 board.

Post by StevieGoodwin » October 26th, 2017, 8:41 am

Hi all, I have an SCPH-1001 from August 1995 that i accidentally touched the BIAS AND GAIN pots on. It's the one with the pots from a PU-7 which can be confusing. Here is a picture on what i mean on those type of pots:
POT (VA2).PNG

This is the POT of a later SCPH-1001 which is so easy to work on:
focus_bias_2.jpg
What does the green mean? What does the yellow mean? What does the red mean?


Does anyone know the original position where i can reset the older pot on the first picture back to. If you got a picture and mark it with a color. I would apperciate it, because it is working very poorly with very rough skipping.
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StevieGoodwin
Curious PSXDEV User
Curious PSXDEV User
Posts: 33
Joined: May 2nd, 2017, 9:15 am

Re: Resetting the BIAS AND GAIN POTS on the PU-7/PU-8-11 boa

Post by StevieGoodwin » October 26th, 2017, 9:26 am

Anyone?

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