I bought an x1900xt off ebay with no heatsink for about £10 (untested). Slapped a load of thermal compound on the gpu and held up a regular cpu heatsink to see if it would even post. Uh oh, instantly I see a flash and smoke coming off one of the components just above the one marked vt223tf on the diagram. Presumably if the card was working before, it is now certainly dead
.
Any idea what may have caused this?

Any idea what may have caused this?

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