Midway A082-90400-x000 Power Supply

[ikillrinst]

ohms, had it on 20k and it slowly climbs and then hits 0.L, I checked my SID board to compare I forgot the reading but it doesn't say 0.L.

 

[ForKChop]

ElektronForge's power supply guide was very helpful in troubleshooting my power supply. He has pictures of exactly where to measure for each voltage.

http://www.elektronforge.com/TestMdwPS.htm

 

[ikillrinst]

started out as possibly being the PS, we are past that now and moved onto the main motherboard.. Thanks

 

[ikillrinst]

Is there anyone who can give me a point in the right direction here.. first my board had a dead short, I found it to be a blue tantalum 22uf 25v, I changed that and now when i read the +12 on ohms, on 20k it slowly climbs and then hits 0.L, I checked my SID board to compare I forgot the reading but it doesn't say 0.L.

 

[ELutz]

Since you fixed the short.....have you fired it up to see what happens?.....and take another voltage reading with the short removed?

Edward

 

[ikillrinst]

yes, my voltage is now at 12.28.. but still nothing happens.. no sounds nothing on screen, you can see the monitor go on and can see it shrink down when powered off..

 

[ikillrinst]

still trying to figure out why this board is not working..

 

[omegaman]

Have you got a logic probe or a DMM with HZ setting? start by checking the clock signal is good at the CPU. You should see it pulsing on the probe.

 

[ikillrinst]

my DMM has ACV, DCV, DCA, OHM and continuity.. damn I need to quit being so cheap..

I know I am repeating myself but...

I have a SI and a SID,

I checked the ground and +12 at 20k on the SI board and It climbs util it hits 0.L
I checked the ground and +12 at 20k on the SID board and It reads 4.39

 

[trol666]

Did you check the voltages at the pcb edge connector?
The connector to the psu could be bad.
Took me ages to find out it was just the connector.

 

[ikillrinst]

Yes, I even put the SI boards in my Deluxe and still no go.. the problem is still with the main board, the readings are not the same as the Deluxe board..