First post, by Intel486dx33
Hi, I have a DELL Optiplex 433/L with 486dx-33
I am trying to fix.
What happened is that I was fooling around with it out side on the patio table trying to add a CDROM drive and I must have shorted something out. From what I remember the computer was turned on when I was connecting the CDROM drive. The power supply fan is so quiet I did not realize the computer was turn on.
Previously it was working.
So now I get NO video
I checked the power supply and it tested good.
Power supply Fan spins up too.
I took a multimeter to the motherboard and some capacitors report 12v
The PC Diagnostics card reports nothing. No beeps and no error codes.
No blinking of lights either.
I tried a different video card but no success
Anyone have a motherboard schematic or diagram for this computer ?
Any Ideas on how to go about fixing this ?