Re: LG 42PC1D (PDP42X30401) wiht flickering image and Vzb high
the tops of the capacitors are bulging, I can see at least 5
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Re: Sharp Aquos 40aj6ke backlight ok, no sound or video
Hi Jimbofz,
thanks for your reply, I did read your post once I found it by searching for them ic's, yeah its a dead end for datasheets for those.
I will remove bezel and check....
here's what I've done so far, I've tried the replacement panel board by plugging in the cable from the main board and I get all the voltages, obviously the panels not connected, but this would indicate to me that the main board is not faulty
I reconnected the cable...Last edited by Questcom; 03-31-2021, 08:37 PM.
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Re: SONY BRAVIA 40WE663 odd problem
maybe a dry joint somewhere, also worth spraying the dc to dc ic with freezer spray to see if voltages stay longer or come back
what are the input voltages measuring like when other voltages are missing
I'm still new to this but you should have 12v and maybe 3.3v on input from MB...Last edited by Questcom; 03-24-2021, 07:37 PM.
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Re: Sharp Aquos 40aj6ke backlight ok, no sound or video
can anyone give me any ideas please, I got another panel board through today, but it would mean removing them orange ribbon cables and soldering them to the new one, but I just feel that a bit drastic at this time, lol
has anyone has datasheets on rt6935 and rt6939?
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Re: SONY BRAVIA 40WE663 odd problem
I'm still learning, but I was going to say check vone and voffe voltages should be around 30v and -8v and make sure they are stable...Last edited by Questcom; 03-21-2021, 07:38 PM.
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Re: SONY BRAVIA 40WE663 odd problem
tested out of circuit
good state: inductor should be short and capacitor should be open
bad state: inductor would be open and capacitor short (maybe discoloured due to heat)
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Re: SONY BRAVIA 40WE663 odd problem
looks more like a inductor to me and not a capacitor...
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Sharp Aquos 40aj6ke backlight ok, no sound or video
Hi All,
I have recently purchased a faulty Sharp Aquos 40aj6ke which turns on and has backlight but has no sound or video, the person I brought it from told me he had changed the main board and the same fault was there.
I have tested voltages on main board and they seems ok, the backlight is at 75v, I believe this tv has 3 x 8 strips of leds which 75v would work out to around 3v per led
I think the issue is on the board that attaches to the lcd, doing a bit of digging watching videos etc, there is a lot of mention of vgl and vgh being around -8 and...
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