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Hitachi 53fdx01b no picture
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kp06



Joined: 06 Feb 2007
Posts: 15
Location: Bonne Terre MO

PostPosted: Fri Feb 29, 2008 6:46 pm    Post subject: Hitachi 53fdx01b no picture Reply with quote

I have the above tv with no picture. Tried replacing the str-f6629b with no luck. I think it has something to do with the power supply. Pin 4 on the str-f6629b is supposed to read +14-18V but it reads -36V.
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minnie



Joined: 18 Aug 2005
Posts: 2877
Location: Hell

PostPosted: Fri Feb 29, 2008 7:15 pm    Post subject: Reply with quote

Did you check pico fuse EP 91?
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PostPosted: Sun Mar 02, 2008 5:31 pm    Post subject: Reply with quote

yeah it checks out good.
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minnie



Joined: 18 Aug 2005
Posts: 2877
Location: Hell

PostPosted: Sun Mar 02, 2008 6:53 pm    Post subject: Reply with quote

I'd replace the convergence IC's and check the resistors next.
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kp06



Joined: 06 Feb 2007
Posts: 15
Location: Bonne Terre MO

PostPosted: Mon Mar 17, 2008 4:55 am    Post subject: Reply with quote

The resistors check out good I think it has to do with the power supply.
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PostPosted: Mon Mar 17, 2008 10:33 pm    Post subject: Reply with quote

Convergence IC's will cause a dead set.
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PostPosted: Thu Mar 20, 2008 7:25 am    Post subject: Reply with quote

I to have the same problem. Replaced the convergence IC's and still same problem. The set will not power on. I get the relay clicks and all the led's come on but it makes a whine sound over and over like its trying to start but never comes on. I dont know that is making the high pitched sound but when I touch leg 1 of STR-F6629B with the volt meter the tone of the sound changes. I am going to try replacing that next. Checking voltages on the other Regulators Q777 I get 58 volts on the 2 outer legs. So something is not right.
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kp06



Joined: 06 Feb 2007
Posts: 15
Location: Bonne Terre MO

PostPosted: Wed Dec 10, 2008 8:36 pm    Post subject: Reply with quote

Yeah I am getting a strange voltage there too. Something like 56 volts. did you ever figure it out?
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minnie



Joined: 18 Aug 2005
Posts: 2877
Location: Hell

PostPosted: Wed Dec 10, 2008 10:25 pm    Post subject: Reply with quote

This is known for the horizontal output transistor shorting.
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kp06



Joined: 06 Feb 2007
Posts: 15
Location: Bonne Terre MO

PostPosted: Thu Dec 11, 2008 3:50 am    Post subject: Reply with quote

Where is that located?(I dont have the TV or Manual where im at)
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