Look for a schematic of the ISA bus slot. Then its easy to find the pin on you card to see where the 5volt plus line is.

And then look at those yellow tantalum capacitor and check which one is the shorted one..

Did you also test you system to see if the fault wasnt on your motherboard.?

+5V pins B3 and B29. They are on the other side of the card. B1 is located closest to the bracket.
First element on +5V rail is usually electrolytic capacitor (C10 on your board).
It should be placed between +5V (B3) and GND (B1). So you can start searching there.
And be aware what are you doing. The capacitor may show short for a while when using multimeter with very high internal impedance.

It looks like a WDXT-GEN2 clone. I have a WDXT-GEN2 somewhere, will take a good picture....
added: You can read the IC's but cannot read the caps, even with a magnifier they are difficult....

Horun wrote on 2023-08-13, 15:40:

It looks like a WDXT-GEN2 clone. I have a WDXT-GEN2 somewhere, will take a good picture....

Thank you soooooooooooooo much.

disaster wrote on 2023-08-13, 15:30:

And be aware what are you doing. The capacitor may show short for a while when using multimeter with very high internal impedance.

Oh!
To be honest, my MFM ISA Card and my MFM HDD PCB (ST-225) both showing short in +5v line.
But, no such short when testing my 8-Bit ISA CGA card or those 16-Bit Trident VGA cards.

The question is what are we assuming as short.
10 ohms will beep on most short detectors but it's only 500mA on 5V 😀
Wdc2010 IC supply current is 220mA

disaster wrote on 2023-08-13, 16:05:

The question is what are we assuming as short.
10 ohms will beep on most short detectors but it's only 500mA on 5V 😀
Wdc2010 IC supply current is 220mA

Hmmmm.... I need to rethink.
Because, it was a running card (decades ago), then put in a box and stored after newer PCs....

Thanks a lot for the tip.

probably no help but you can read some of the caps in this pic.

Horun wrote on 2023-08-13, 16:20:

probably no help but you can read some of the caps in this pic.

This is HUGE help!

Horun wrote on 2023-08-13, 16:20:

probably no help but you can read some of the caps in this pic.

Can you pls do one small test ?
Pls measure resistance value between +5 line and GND with a Multi-meter.

ayandon wrote on 2023-08-13, 18:37:

Horun wrote on 2023-08-13, 16:20:

probably no help but you can read some of the caps in this pic.

Can you pls do one small test ?
Pls measure resistance value between +5 line and GND with a Multi-meter.

88-89 ohms, either direction is same with in 1 ohm (- to GND, + to +5 and + to Gnd, - to +5v)
If it were me: I would unsolder and pull out just one leg of each capacitor, specifically the Electrolytics first. Then take a reading and see if you are 50 ohm or better.
Then do same with tantalums, leaving one leg out as you progress thru the caps.
If not then one of the ic's is most likely shorted....

Horun wrote on 2023-08-13, 21:57:

88-89 ohms, either direction is same with in 1 ohm (- to GND, + to +5 and + to Gnd, - to +5v) If it were me: I would unsolder an […]
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ayandon wrote on 2023-08-13, 18:37:

Horun wrote on 2023-08-13, 16:20:

probably no help but you can read some of the caps in this pic.

Can you pls do one small test ?
Pls measure resistance value between +5 line and GND with a Multi-meter.

88-89 ohms, either direction is same with in 1 ohm (- to GND, + to +5 and + to Gnd, - to +5v)
If it were me: I would unsolder and pull out just one leg of each capacitor, specifically the Electrolytics first. Then take a reading and see if you are 50 ohm or better.
Then do same with tantalums, leaving one leg out as you progress thru the caps.
If not then one of the ic's is most likely shorted....

Thanks a lot for this awesome tip and guide.