There is most likely an issue with the Surround PWB since you have the DP17 chassis. I would check the following items on the surround board. I have seen them all several times with the DP17
IT02 Shorted, pins 92 and 93 caused by Solder splash. IT02 Is also known to fail. Also pins 42, 43, & 44 have been known to have cracked solder
IT05 pins 20 & 21 shorted also Seems to have been caused by too much solder.
IS13, pins 1 & 2 shorted ( too much solder
Also check for cracked circuit trace patterns under IT05If you need further assistance let me know.
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