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Power Supply fuse blows HOT checks ok But does have a short somewhere.

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  • Ray Jones Mar 14, 2008

    Brand Symphonic Mfg. Funi Corp.Inc. Board#2642308 alt.#80211477 It has Toshiba Transistor for HOT# D2638

  • Ray Jones Mar 14, 2008

    This is not a projection tv it is a symphonic 27' picture tube model. Ray Jones

  • Ray Jones Mar 14, 2008

    Jamie867 Brand is Symphonic 27" Picture Tube type Board Sticker has two numbers top row is 2642308 bottom row is 80211477. Mfgr. Funi Corp. Inc. Model # WF27F4

  • Jaime Hernandez May 11, 2010

    Can you provide us with more info on brand, model and chassis number?

    The more info we have the better we can point you where to check.



3 Answers

Ray Jones
I posted the solution that you notified me about . I thought it might help someone else. I do thank you for your help Jamie867.

Posted on Mar 25, 2008


The problem was two IN5406 diodes in the switching power supply was blown and replacing these got the set up and running again thanks for your help.

Posted on Mar 21, 2008

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I look for an schematic diagram but i was unable to find one. I guess we can try to fix this one the old fashion way without the schematic.
I would suggest to check the voltage regulator for a shorted condition and all the diodes and capacitors near it. If your horizontal transistor is good the short is somewhere the power supply but you can also check any other part that has the B+ 130VDC.
Let me know if you need more assistance.

Posted on Mar 15, 2008

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I have worked on about 5500 projectors in the past 10 years.
There is a dead short already somewhere so you cant blow anything else up if its a fast blow fuse.
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