Just looking for some pointers here - I acquired a Matrox Parhelia 512 (128MB, 250 GPU / 300MHZ Memory) AGP 8x card recently and it's pretty valuable piece of kit to me as I have some nostalgia for Matrox graphics cards.
Issue is it is flakey as, so either immediately, or after some amount of time you'll get desktop and graphical glitches, snow. random noise, flashing textures etc.
Running video memory test on it - https://www.majorgeeks.com/files/details/video_memory_stress_test.html - occasionally it'll be solid as a rock, and other times it will start screaming errors.
I've tried different motherboards, different AGP speeds, drivers etc. In desperation I tried pushing down on the heatsink during the video memory test, and lo and behold, when I Push down on the heatsink (relatively forcefully) the memory errors suddenly stop, I release they start, push down again, they stop.
So there seems to be an issue with the contact between the PCB and the parhelia chip. I've read all sorts about heatgun based re-flow, reballing etc. These all look a bit extreme, but just wondering what any suggestions might be for trying to salvage this board. It's in practically brand new condition almost looks unused, so I suspect it might have come out of the factory a bit dodgy.
Issue is it is flakey as, so either immediately, or after some amount of time you'll get desktop and graphical glitches, snow. random noise, flashing textures etc.
Running video memory test on it - https://www.majorgeeks.com/files/details/video_memory_stress_test.html - occasionally it'll be solid as a rock, and other times it will start screaming errors.
I've tried different motherboards, different AGP speeds, drivers etc. In desperation I tried pushing down on the heatsink during the video memory test, and lo and behold, when I Push down on the heatsink (relatively forcefully) the memory errors suddenly stop, I release they start, push down again, they stop.
So there seems to be an issue with the contact between the PCB and the parhelia chip. I've read all sorts about heatgun based re-flow, reballing etc. These all look a bit extreme, but just wondering what any suggestions might be for trying to salvage this board. It's in practically brand new condition almost looks unused, so I suspect it might have come out of the factory a bit dodgy.
