Re: Westinghouse TV WD48FAB100 Not Powering On – Burn Mark Found on Power Supply
Thanks for the suggestion and eBay links on the eeprom readers/programmers.
You taught me something new about other various paths that could be taken.
Unfortunately, this is a bit out of my technical league on performing the download/upload.
Surfing the web tonight, I located a replacement board which I did not have any luck in finding over the last couple of weeks. It must have became newly available. I ordered it and will update when it arrives.
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Seville
Member
Last Activity: 02-09-2023, 09:25 PM
Joined: 10-09-2022
Location: Midwest
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Re: Westinghouse TV WD48FAB100 Not Powering On – Burn Mark Found on Power Supply
Thanks for the offer Lotas.
Not sure how I would do this, but interested in learning on how to read the dump.
"If you have a programmer, try to read the dump and put it here, I'll look at the contents, and if the problem is in the firmware, then I'll try to fix it."Leave a comment:
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Re: Westinghouse TV WD48FAB100 Not Powering On – Burn Mark Found on Power Supply
Wow, thanks for all of the support! Very impressive group willing to help here.
As an alternative, could I swap this ONN board currently on eBay with the Westinghouse board. It has the same footprint and connections.
ONN - ONC18TV-000 Mainboard TP-MS3553 - PB801 ROKU...Leave a comment:
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Re: Westinghouse TV WD48FAB100 Not Powering On – Burn Mark Found on Power Supply
Thank you for the suggestion! Photo attached and here is what I measures at each pin for this 1118 component.
Pin 1 0v
Pin 2 5.15v
Pin 3 0v
Pin 4 5.16v
Pin 5 3.34v
Pin 6 3.34v
Pin 7 1.82v
Pin 8 1.82v
All seems to be good with this test. Keep the suggestions coming, please and thank you!...Leave a comment:
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Re: Westinghouse TV WD48FAB100 Not Powering On – Burn Mark Found on Power Supply
Attached photo of the ports where the voltage readings were obtained and the lit red standby light.
When I press the power on button on the tv, nothing happens. Also, when I try the remote control power button, nothing happens, red standby light stays lit.
Would anyone know which ports to jump to force a turn on? Is that a good next step, or something else. Thank you for your questions and suggestions!...Leave a comment:
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Re: Westinghouse TV WD48FAB100 Not Powering On – Burn Mark Found on Power Supply
Thanks for the caution note, nomoresonys!Leave a comment:
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Re: Westinghouse TV WD48FAB100 Not Powering On – Burn Mark Found on Power Supply
I measured the voltage readings from the backside of the board. The pin markings were there.Leave a comment:
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Re: Westinghouse TV WD48FAB100 Not Powering On – Burn Mark Found on Power Supply
Thanks all.
I'm thinking the same thing, something was fried. Looking for what to test next to locate and replace the fried component(s).
Any guidance on how to reload firmware and what to test next?Leave a comment:
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Re: Westinghouse TV WD48FAB100 Not Powering On – Burn Mark Found on Power Supply
Thanks, anyway to correct that or should I recycle this TV?Leave a comment:
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Re: Westinghouse TV WD48FAB100 Not Powering On – Burn Mark Found on Power Supply
Thanks for the tip on testing non powered! I tested each Diode, DB1, DB2, DB3, and DB4 receiving these readings: 613,1; 610,1; 612,1; and 610,1. So they appear ok. I believe these are part number 1N5408.
In testing the yellow rectangle cap board position CXB1 (part number CBB62B) I set my multi meter at 2000k ohms and the readings climb to 1184 and then stop. Not sure if that is good/bad or pass/fail.
Next step to test please!Leave a comment:
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Re: Westinghouse TV WD48FAB100 Not Powering On – Burn Mark Found on Power Supply
Thank you, that helps! I'll give it a try later today and report back.Leave a comment:
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Re: Westinghouse TV WD48FAB100 Not Powering On – Burn Mark Found on Power Supply
Thanks, I need a little help on how to test those. I have a multi meter and need some guidance on how to test. Which end to place the +/- probes and what reading would be considered good, thank you for the guidance!Leave a comment:
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Re: Westinghouse TV WD48FAB100 Not Powering On – Burn Mark Found on Power Supply
Yes, good question, I measured 120v at the at the connector. Also measured the continuity between the connector prong and where it attaches to the board. All checked out.Leave a comment:
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Westinghouse TV WD48FAB100 Not Powering On – Burn Mark Found on Power Supply
Hello all!
Westinghouse TV WD48FAB100 Not Powering On – Burn Mark Found on Power Supply .
I have a Westinghouse LED TV, model WD48FAB100 that is not powering on. Upon removing the back cover, I noticed a burn mark where the AC cord connects to the power supply/main board. In this model, there is only one board combining the two functions. Previous owner said the TV experienced a lightening strike, but who knows. I checked the main fuse, tested OK. Here are a collection of readings from the power supply ports. Looking for some guidance on what to test/check next.... -
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Hello, looking for advice form the many experts gathered here!Leave a comment:
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