Question about Sharp 25R-S100 25" TV
To know more about this, you have to download the repair manual to this set. Its schematic diagram section have all details. If you wish to get some details; check the site linked here. Viewing it in "Mosaic" or "Magazine" will make surf easy. Pull up older posts. Surf the site with patience. Do a search by type in the brand name of your device at its search box.
Power supply regulator schematics to many popular TVs are given.
Posted on May 14, 2014
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Posted on Jan 02, 2017
The most likely probable causes of the 'red standby light only - no other function' problem would be the flyback transformer/horizontal output transistor or a shorted component on the HT rail, which derives most of its voltages from the power supply so check this area as well.
If the power supply checks out all OK, I would advise replacing the horizontal output transistor and flyback transformer.
Be sure to get the correct transformer type for your model when replacing it, as each one has different characteristics (including voltage rating and EHT output) in relation to the picture tubes they are connected to. Some may have focus and screen controls as part of the transformer itself, while others will have this as a separate part.
Posted on Feb 16, 2011
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