Re: Thomson 55UA7706 LCD TV startup problem?
Yes, below is new, do they help?
This 24V comes to inverter board from psu pin no. 10 (marked red). And yes, I have 22.92V before but after disconnect/reconnect this 14pin cable, I dont have this anymore, also, no standby.
Because (also question 4) ) one technician suggested to measure C401 22uF/50V voltage and there is 1.6V, they told that I must check this part of circuit, I then measure this SMD components and find this zener conducted both ways, soldered it off and checked with a zener tester - same result, 0.0009V zener voltage.
See previous.
I dont know this zener real name value - if I order new FSFR1700XSL and if there is this broken zener...i dont think that this new IC helps, they also fail probably.
In inverter board, pin 11 to 14 is marked 56V, in PSU, pins 12 to 14 is marked as 60/120V, 11 is not connected (see 1. (PSU connector) and 4./5. picture (inverter connector).
Pictures 2 and 3 is LED stripe connectors from inverter board.
Last 2 pictures is PSU FSFR1700XSL circuit top and bottom view
Originally posted by budm
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Originally posted by budm
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Originally posted by budm
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Originally posted by budm
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Originally posted by budm
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Originally posted by budm
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Pictures 2 and 3 is LED stripe connectors from inverter board.
Last 2 pictures is PSU FSFR1700XSL circuit top and bottom view
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