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MB6582 12V drops to 9V when SID installed (Solved!)


JRock

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Hi. I built a MB6582 baseboard. I think it's Rev. 1. It's red, but it doesn't say what rev. it is, which leads me to believe it's 1.

The soldering looks good, but there's a lot of joints on here... :wink:

Boots up fine and connects with the SID V2 Editor.

I tried another PSU that I know works with another M6582 and get the same results.

I tried lowering the backlight on the LCD and that didn't change anything...

The voltage when the socket is empty reads 11.88V. When I install a SID it drops to 9.3V. And it sounds distorty. The 2nd SID slot behaves normally and sounds fine.

I've tried different SIDs and it's the same.

Edited by JRock
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Hey ho,

If the same sid sounds fine in the second slot, there is likely to be a soldering problem somewhere and not a problem with the psu or the used power-option or the sid itself...

On this behalf, hi-res pics of the board top and bottom would be great ;-)

Bye,

Peter

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On closer inspection it looks like some of the pins on the socket were pushed in some :rolleyes: . I carefully cut it out with a dremel, desoldered the remains and replaced it with a good socket. 11.86V! :flowers: Thanks for your help guys. I love the dummy idea. I'll keep that trick with me!

That solves this problem!

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