Re: Sanyo DP42849 Backlight Shutsdown

Well, I replaced several electrolytics around the inverter section with low ESR caps. Checked each one of the old ones with a Peak Electronics ESR meter, they all looked good. But after reassembly the set wouldn't even power on anymore. Thought I'd installed a cap backwards, but that shouldn't have prevented it from powering up, and after checking they were all installed correctly. I had more pressing repairs pending, so I put it aside.

Cleaning the garage this week and decided to put the set back on the bench. Right away I found...

Re: Need Schematic Sunfire True Subwoofer Junior



I know this is an old post, but if you still have a hum issue try tightening up the grounds inside the unit....

Re: Sanyo DP42849 Backlight Shutsdown

Well, looks like I've joined the no backlight club on this model of Sanyo with the DPS-260LP power supply board.

I found 2 of what I initially thought were SMD transistors that look bad. But these devices are labeled as diodes on the PC board. They have A.7 stamped in the top, with the number 5 sideways on the end.

Any idea what these are? Pic attached.

Thanks in advance, Ray...

Re: New Members - please post your introductions here

Hi My name's Ray. I'm 57, currently an Electronic Tech for a large telecom. Also do component level repair on pro audio, guitar/bass amps and vintage stereo equipment. Also was part owner of a test equipment calibration and repair lab.

I joined this forum for the same reason I've joined others; for the free flow of information. I'm constantly amazed at the amount and quality of information that is so graciously shared in these forums.