Re: Lg 32le4900 no video,sound and backlights
Yes, 923 ohms with the positive test lead on collector and the other one on emitter. I get nothing if I test the other way round. Q8003 base is indeed reading as 0V. What do you reckon?
mattd_robinson
New Member
Last Activity: 11-05-2020, 03:43 PM
Joined: 11-02-2020
Location: Leeds
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Re: Lg 32le4900 no video,sound and backlights
If I am reading this correctly, I see .923 with the dial set to 2K.Leave a comment:
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Re: Lg 32le4900 no video,sound and backlights
Okay, so I get 0V at C on Q8001 both in and out of standby.Leave a comment:
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Re: Lg 32le4900 no video,sound and backlights
Thanks for the heads up. I wasn't able to reconcile the components on the main board with those in the service manual that I originally provided. However, it'd seem that this LD03D chassis version does, and I can report that I get 11.7V on Q8004 at both the source and gate?...Leave a comment:
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Re: Lg 32le4900 no video,sound and backlights
Thanks, I don't suppose you'd be able to assist with identifying the P-CH MOSFET? I believe the attached service manual covers this TV as well. It'd be useful to confirm if the problem lies with the main board....Leave a comment:
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Re: Lg 32le4900 no video,sound and backlights
Have just checked and I get 0V on the T-Con board. I understand the SMD fuse you refer to is marked P on green in the photo below, and that is where I tested....Leave a comment:
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Re: Lg 32le4900 no video,sound and backlights
Okay, I have taken voltage readings on the power board at the pin connector. What do you think? The invertor board and main board have already been swapped out with second hand replacements from ebay without success.
Again, with the wiring loom connected at an angle, the backlights come on and also light up individually when powered from my LED tester. I also noticed that there was no voltage in at a test point on the T-Con board....Leave a comment:
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Re: Lg 32le4900 no video,sound and backlights
Hello, I don't suppose anyone was able to figure out what the problem was here? Another 32LE4900 with exactly the same symptoms. Thanks in advance if anyone knows how to fix it!Leave a comment:
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