Copper Talk » Open Forum » Archived Messages » 2002 » Archived Messages 02/01/2002 to 04/31/2002 » Pyrmaid Ps 36kx « Previous Next »

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radiodude
Posted on Monday, March 11, 2002 - 10:33 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)
My pwr supply has a prob. The waring light comes on and the buzzer sounds, I cant adjust the voltage. Any ideas?
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Bullshipper537
Posted on Tuesday, March 12, 2002 - 8:32 am:   Edit Post Delete Post    Move Post (Moderator/Admin Only)
Radiodude: It's most likley the scr,[silicone-controled rectifier] on the board that has the adjustments. It could be the Lm 723 voltage regulator, but most likley the scr. The scr is a to 220 case device that looks like a final transistor with an odd number on it,on the regulator board. [rip-off shack does NOT have them] bullshipper 537 Tex.
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radiodude
Posted on Tuesday, March 12, 2002 - 9:16 am:   Edit Post Delete Post    Move Post (Moderator/Admin Only)
Is it a flat three legged thing about 1in square? Mounted on the board close to the top?