No video output

[Scott Baker]

I am trying t reset the bios on an X48 that had a way dead battery. Unfortunately I can't get any video to show up on the monitor, which makes resetting the bios a bit problematic. Anyone see this issue before?I have tested the monitor with another computer so I know the monitor works. I have a feeling I can get this back to life if I can get over this hurdle. The bios dance looks very familiar to the Mackie HDR, which shouldn't surprise me since the late great Bob Tudor had a hand in designing both machines. Anyway, I look forward to the knowledge base throwing some ideas out there.

On a another note, if I let it sit long powered up, I get the red dancing OL LEDs across the VU meters.

Thanks,
Scott

 

[Scott Baker]

Upon further investigation, I am thinking I have some bad caps on the motherboard. I lifted the TDIF card out of it so I could see better and it appears that about 7-8 caps are toast with the tell tale ever so slight bulge on the top of them. Looks like I got get on digikey and get some caps and break out the iron and see if I can rehab this thing.

 

[Scott Baker]

Guess what I am doing today...Ugh.

 

[Scott Baker]

Here is a pic of the caps in question that look to be bad. It is 5 short green ones, only 4 in the pic as I pulled one to get values. and two brown . The green are 6.3volt 1500uf and the brown are also 6.3volt and 3300uf, if that helps anyone out there.

 

[Scott Baker]

Progress.

 

[Scott Baker]

Finally, working.

 

[Thelamp777]

I'm working on this right now and wondering witch caps you got exactly?

 

[Scott Baker]

They are right behind the heatsink to the processor. Between the processor and and the back panel, if that helps.

Here is a pic of the caps in question that look to be bad. It is 5 short green ones, only 4 in the pic as I pulled one to get values. and two brown . The green are 6.3volt 1500uf and the brown are also 6.3volt and 3300uf, if that helps anyone out there.

 

[Thelamp777]

Sorry better question I found them but I just don't know exactly what these are specifically called to order them.
Like what type of caps?

 

[Thelamp777]

Looks like I need to replace all 5 of the 150 and just 1 330.

 

[Scott Baker]

Sorry, I misunderstood what you were asking. They are electrolytes caps. I can't remember the size in millimeters off the top of my head. If you pm me your address, I may have some extra from the project I can send you.