My TV went out. Will turn on, no picture, blue light just blinks. Buffer board has a burned IC. Have 2 blown caps on the power supply. Disconnected the other buffer board and tv powers on and displays half a screen. Was wondering if anyone has replaced just the burned IC? I can get one on ebay for around $20. A used buffer board is $80.
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Re: Hitachi P50H401
You should be able to repair the problem by replacing the ic. I had this model and had four bad ICs and had them all replaced which fixed it. -
Re: Hitachi P50H401
How did you know which ones were bad? How did you replace them? I don't have a hot air rework station.Comment
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Re: Hitachi P50H401
There should be 2 little ceramic capacitors parallel to each other next to each IC if I remember correctly. Measure across one for resistance and see if it is shorted, if it is than the IC next to it will be bad. The ICs for this was relatively expensive so I ended up sending it in for repairs from someone on ebay.Comment
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Re: Hitachi P50H401
Do these have panasonic guts..?Comment
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Re: Hitachi P50H401
I will have to check them. So if the tv turns on and displays half the screen with one buffer plugged in, does that mean the other boards are ok? I was wondering if I could use a heat gun and a solder iron and replace myself. Then I guess silicon around the chip.Comment
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Re: Hitachi P50H401
I usually scratch off as much of the silicon off the chip as possible and then remove the chip with a heat gun and aluminium foil. It's a bit difficult thoughComment
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Re: Hitachi P50H401
I might try it. The hardest part I think would be soldering the new chip.Comment
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Re: Hitachi P50H401
Soldering the chip should be pretty straight forward. But you have to be careful not to damage the traces when removing the old one since it is held with some silicon that will add extra force when trying to lift it.Comment
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