stealthjoe wrote on 2024-04-26, 09:52:
As per my understanding this is supposed to be 5.1 k ohm. However on measuring these it showed 2.6 k ohm. It is the same case with all these 512 resistors and with 2 different multimeters. Is this the expected value?
Yes, it's normal for resistors to sometimes measure lower resistance in circuit. This is because other paths in the circuit could be putting other resistors or components in parallel with them, making the overall reading lower. Only if resistance reads higher than what is printed, you should be concerned.
Since you card had damaged SMD parts on it, there's a good chance there may be more. I can see nothing else appear to be missing. However, hard shock can sometimes crack ceramic caps and cause them to short out. Now, if any of them shorted out on a power rail, they would either burn up or take the power rail down, causing the card to not work at all. However, there should be a few ceramic caps around the RAM modules that are not for filtering a power rail and are rather used as signal coupling. If these short, the signal going to the memory chip(s) can become corrupt, leading exactly to the issues you see. I managed to save a Radeon HD6850 a few years back with this exact problem (shorted ceramic cap near one of the RAM chips.) To check for this issue, basically perform a resistance test across all of the small ceramic caps around the memory chips and the back of the GPU chip. Note that some will show a very low resistance reading - these are likely to be power rail filters for either the GPU core voltage or the RAM V_dd voltage. Once you test a few, you'll know which ones are which, because the one on the GPU V_core, for example, will have the lowest resistance reading, and it would be consistently the same for all ceramic caps that are connected to it. Same with the RAM. Outside of these two, if you find any ceramic caps reading a "hard" short-circuit (less than a few Ohms), you should note them down (and maybe post them here too.)
I have the same exact Asus Radeon 9200 video card, so I could double-check these values for you to see if they are a fluke or not. Just have to find where it is (since I moved somewhat recently, and there's still lots of non-essential stuff sitting in boxes.)