Andrey, > Yes this is consistent with what would happen with the board if you > really twist it (trying to solve the problem that turned out to have > nothing to do with the camera itself) - some of the pads on the chips > got pulled off from the board and now the contact is only occasional - > when they touch each other. If it is just the ball(s), not the traces - > we might be able to repair the board by running it through reflow oven. > > Meanwhile (as you will be away from your place and can not receive the > replacement board during that time) if the camera sometimes works, you > may try to temporary repair it. From the image the problem is ion the > ball contacts of one of the two chips - on the image > http://wiki.elphel.com/images/3/38/10353top.jpeg (it is previous > revision, but similar) you can see FPGA on the right side by the > connector (large, square) and the video memory - rectangle right above > it. Most likely the problem is with the memory - when you twisted the > board it got more stress as it is near the board edge. You may try to > put a piece of plastic on top of the memory chip and then wrap the board > with a thread, so that plastic piece would push the chip to the board. > It may still be the FPGA chip, because the connection in data lines > between the two is broken, and it is only my guess that it is under the > memory.
thanks - I'll give it a shot. OTOH, as now the camera seems stable, I might not touch it, to be on the safe side :) Akos _______________________________________________ Support-list mailing list Support-list@support.elphel.com http://support.elphel.com/mailman/listinfo/support-list_support.elphel.com