MVS Help power supply issues.

L

lexchange

Guest
I have a single cart MVS that I am trying to repair. I have through reading your site figured out that I had a power issue (screen apeared green with garbles). I have tried replacing the power supply unit with a ATX PSU. The fan of the PSU will only turn on if I have the +5v lead disconected. Any help would be apreciated!
 
Xian Xi

Xian Xi

JammaNationX,
15 Year Member
Joined
Dec 1, 2005
Posts
27,762
lexchange said:
I have a single cart MVS that I am trying to repair. I have through reading your site figured out that I had a power issue (screen apeared green with garbles). I have tried replacing the power supply unit with a ATX PSU. The fan of the PSU will only turn on if I have the +5v lead disconected. Any help would be apreciated!
Click to expand...

Try the other +5v line. I think with ATX there are 2 different +5v lines.
 
channelmaniac

channelmaniac

Mr Neo Fix-it
15 Year Member
Joined
Nov 29, 2005
Posts
4,316
Make sure you are using the red wires for the +5v.

If you are using the 5v standby you will fry it. It's only good for 1/2 amp.

RJ
 
Razoola

Razoola

Divine Hand of the UniBIOS,
Staff member
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Nov 12, 2002
Posts
4,665
From what you describe it could be any one of a number of problems not related to the power supply. Have you tried powering on the unit with all Hard DIPs in the on position? Its possibe the sysyem has a calander or backupRAM error which doing this may help to show.

Raz
 
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