Sams Photofact
Sams Photofact
My TV Sharp 25F-M40 model is dead.?
This TV is about 10 years, I Ilke repair. I replaced several parties, the controller horizontal output transistor, SCR for switching power supplies, diodes, capacitors of several in the fuel system. Originally burning fuse. Now it is constantly clicking on what appears to be from flyback transformer. When an output voltage of the SCR is fluctuating between 85VDC and 150VDC. One of my friends said the need for replacement flyback. I checked all the resistance readings in its windings with an ohm meter Special, everything looks as indicated in the maintenance manual. It is clear that no oscillation and therefore results Volatge low DC. No High Voltage output neither. I think the flyback transformer needs adjustment airspace with two plastic screws, so you can get oscillations and voltage outputs. Sat Photofacts I have the Service Manual. Grateful every thought. Thank you in advance
If the damaged fuse SCR usually near the SCR survey is also damaged, and please do not be replaced by regular small R, I think the problem is always around the primary zone. But I'm not sure.
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US $3.98
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