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No picture on Packard Bell LCD TV 170ASW

I bought a Packard Bell LCD TV 170ASW from a friend and the unit came without a power supply. I finally managed to locate one but the plug needed changing. The kind assistant offered to change it for me as I do not have a multi meter at home. Unfortunately he made the plug centre negative instead of positive and I did plug the power supply in and attempt to power the unit up. I immediately realised that something was wrong and turned the power off. The unit seems to be working fine apart from the fact that there is no picture at all. The sound is fine and all other features seems perfectly ok. I opened the unit up and can see that the solder on the socket is discoloured but also noticed a 7A fuse next to the socket. Is there any chance off the unit being repairable?

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Hi there , dont no if this is any help , i have the same model that would display an image when its in setup mode but as soon as you choose tv or computer it would go blank with just sound , did not find the exact fault there s a small short to do with the backlight board , but when i remove the backlight connector from the main pcb and remove the yellow ? wire from the connector the one on the xtal side of the connector and refitted the connector with out the yellow wire the tv worked fine .

Posted on Jun 30, 2009

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