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Horizontal Output Transistor

I suspect my HOT on my Philips 7P5441C is shorted. How would I go about testing the HOT? And, if it is bad, where can I find a replacement? I've done a few searches, but haven't found any results.

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  • BtoumRoumada Sep 19, 2007

    Thanks for trying, but I'm still kind of in the dark. Let's say I go for the board, instead-- How do I know which product is the one I need? I went through PTS Electronic's website, and looked through the products list, but I have no idea which part is the one I need. For instance: The model number on my board is APD016C003, the closest I can find on PTS is 'ADP016', which reads 'LARGE SIGNAL'. That's not my board, is it?

  • BtoumRoumada Sep 19, 2007

    And, sorry, one more question. In searching for HOT, I found for the 7p5441C, "NPN Transistor", 483513047073, is that the Horizontal Output Transistor?



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This philips board give many problems with no raster. Most times its Horizontal and sometimes it transformers I have found it would be much simple to buy board or send off to be repaired. Pts 1800-844-7871 is the best bet. You also can get hot at places like MCMelectronics, bluestar international, tritronics. If you do not want to buy board.

Posted on Sep 19, 2007

  • Lashawn Robinson Sep 21, 2007

    Your number is probably the small number on the white paper on the side of the board, but there should be another number on the Hot side which begins like GR7, GR8, GR9 Large Signal. If you give PTS the model number they will look it up and they are quite accurate. If you just want Q906 HV output most are the 2SD2539. I hope this can help you!



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