Question about Zenith 12vDC 800mA 20W AC Adaptor A41208 (1500850) Power Supply

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Sometimes the TV comes on and works fine with no problems for weeks, other times it will not come on at all, not even a click when pressing the on/off button. Strange but seems to work ok in hot humid wheather and not in cool dry wheather. Maybe a short?

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Check your all capasitors of pwd supply any capasitor is lickege or short or not work poperly if you cann't find any problem replace your all capasitors of pwd supply

Posted on Mar 09, 2009

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Hi, From what you have posted 2 possible things: 1. Cold solder - this proble is common in the power supply, vertical and horizantal circuitry. Look for any dull colored solder joints special in power components like high wattage resistor, regulator or output ICs or transistors; this problem also becomes apparent when the unit is jarred; and/or 2. Component heating up and failing - more often than not it is an active component like a power transistor or power IC that starts to fail when running after sometime (due to heat buildup) again anywhere the power, vertical, horizontal section. You would need an aeresol spray of contact cleaner to spray on the suspected component to lower its temperature when the TV starts to fail. You need to be familiar with soldering, use of a VOM, circuit analysis and component level repair to properly fix the problem. Further there are dangerous high voltages inside a TV unit even with the power off. Likewise, the unit has to be diagnosed, run, repaired and tested with the back cover off. With these in mind, you might be better off seeking the services of a qualified TV technician. Hope this gives you an idea of the problem. Pls post again how things work up your end. Good luck and kind regards.

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Try this:

1.Open Internet Explorer

2.At the top of the screen, click on Tools.

3.In the Tools menu, click on Internet Options...

4.If you do not see the tools menu hold down the alt and t key on the keyboard.

5.In the Internet Options window, find the Temporary Internet Files section. Click on Delete.

Delete Browsing History window will appear. Click on the Delete Files... button.

A verification screen will then come up. Click Yes to delete.

6. When this is finished, you can click Close and then OK on the Internet Options window and you are finished.

Please leave a comment if this worked or not.

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