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driving song
Joined: 20 Sep 2007
Posts: 2
Location: ilm
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 Posted: Thu Sep 20, 2007 8:33 pm Post subject: Hitachi 50ux22ba/23ka will not power up |
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All 6 LED's light up when I hit the power button then all but one turn off after a sec. The one labeled D903 or D975(can't tell which number corresponds w/ it but it's also labeled "protection" w/ an arow pointing to it) remains on. Any suggestions as what to check for? thanks in advance.
btw: While researching I saw that similiar models with a similiar problem were fixed by replacing C707 and E994 but I don't see those on mine at least not in the same spot. |
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cory
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| Posted: Thu Sep 20, 2007 10:02 pm Post subject: |
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| if this set has them you wil find c707 just in front of flyback,under glue and between 3 large capacitors.and e994,2a fuse on secondary of power supply.if fuse is open i believe the one led will not light.also check for burnt resistors next to convergence ics.if so replace open resistors and ics. |
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driving song
Joined: 20 Sep 2007
Posts: 2
Location: ilm
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| Posted: Fri Sep 21, 2007 8:11 pm Post subject: |
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| thanks for your input. After DLing the service manual it appears my set does not have the C707 or E994. All fuses seem to be good so at this point I think I'm in over my head. Thanks again. |
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cory
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| Posted: Sat Sep 22, 2007 3:22 pm Post subject: |
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| did you look for burnt resistors near convergence ics.you can visually see them.1.5,1.8,2.7 ohm. |
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