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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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In Reply to: RE: No progress posted by pars on January 21, 2008 at 16:35:17:
Hmm,
I did not thing about the transformer leads. I did check voltage on pin 4 and pin 8 of each op amp socket. -15v and 15v, both correct. as far as anything else, not sure what the correct voltage should be, no way of checking.
Where are the +/- 5v and +/- 15v checking points?
I am certain that my connections of cables are correct because I do have a diagram from so called service manual.
When I was de-soldering the op amp, I did not fully disconnect all the wire, but enough so I can stand the pcb 90 degrees. Then I de-solder the op amp and solder the sockets in place. after that, the display showed all light up. after messing with the wires, that is checking for cold solder and wiggle them to see if there is any broken pcb solder joint, now the display only show a few light up.
What do you think?
Much appreciated.
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Follow Ups
- RE: No progress - twl168 16:58:12 01/21/08 (1)
- RE: No progress - pars 19:56:11 01/21/08 (0)
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