Question about NAD T762 Receiver
Lately the T762 has been acting up a bit. First I noticed that the monitor video out started to flicker with grey background as if the vertical sync is out, the OSD menu's almost useless. Then, intermittently, the digital input often stop working (not just one input, but any of the digital inputs that connected to PS3, Sattelite DVR, and DVD via either coax or optical links all exhibit the same behavior) The latest being that the volume goes up, but barely goes down, condition is worse with use of remote controller.
Except the flicker video out, the other conditions do not exist when the machine is cold. After having used for about 45 min to 1 hr mild use (ie just watching tv and relatively low volume) the condition started to show up.
NAD had yet to responde... has anyone had similar issue and if it has been fixed?
Since the problem appears only after the unit has been run for a while, I'd be looking for any part close to a heat source. The odd behavior suggests that there is noise on the data lines for the volume control chip and the digital processing areas. Look for a bad 5V regulator +/or bad caps on the 5V line. Also check for poor solder connections in the power supply and final output stages.
Keep us posted.
Posted on May 13, 2008
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Posted on Jan 02, 2017
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