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Samsung UE40F5500AK

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kennyc:
Hi Turnip, had a Samsung with no picture cant remember model number but thought T-Con was faulty but it turned out to be one of the small caps on the board below the T-Con. If it has this board there are about 8 in a row and they look like surface mounted fuses . One was leaky . Like I say i cant remember the model number .

Turnip:
Thanks 'Ken'

Disconnected flexies T/con to screen - No difference. Noted that a chap on Youtube checks drive from the SSB using a meter on the T/con input buffer resistors, noting voltages or not. Had voltages, so suspect T/con not turned off due to lack of drive. Also checked for duff ceramic caps - Nope. Did discover that Q300 is controlled by the big chip to the right, but it has no voltage on any pin, and can't see where it's supply should come from - Chris.

Most everyone suggests IC200 is duff, always is if the fuse hasn't popped. 'Microtech' likes to sort them for a modest price.

Turnip:
Sent panel to 'Microtech' where they replaced IC200 - Job done.

Thought to get a few ISL9860 as cheap, and as now have a PCB pre-heater and a hot air gun, will have a go myself.

Guess takes practice to get the new chip to sit exactly where it should and solder it.

It's always easy on YouTube as it works every time - Chris,.

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