vcr/dvd combo

the unit is about a year old. It has no power, fuse is good. PR1005 appears to be open and zener 1041 is reading shorted. Has anyone run into this problem. If so are these the only components you ran into that were bad.

Thanks ahead of time

Reply to
shepleygr
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What is the device labled PR1005?

Reply to
rrebman

"shepleygr" wrote in message news:43a8311f$0$23784$ snipped-for-privacy@authen.yellow.readfreenews.net...

If the shorted zener is in the secondary area, this is often caused by bad (high ESR) capacitors. The zener in this scenario exists in order to protect other components downstream by shorting out if that particular power line goes above the zener level as a result of a loss of regulation, which in turn is most often caused by the bad caps. Replacing the caps and the zener usually fixes the problem in these cases. If the zener goes directly between a DC line (say the 5v or 14v line) and ground, without benefit of a limiting resistor, that is a giveaway that this is your problem. In the situation I have proposed, the zener does nothing under normal circumstances, thus requires no limiting resistor.

MarkZ .

Reply to
Mark D. Zacharias

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