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Search: Posts Made By: budm
Forum: Troubleshooting TVs and Video Sources Yesterday, 09:50 PM
Replies: 46
Views: 2,260
Posted By budm
Re: Panasonic Viera TC-L32U22 no picture

So you cannot trace out the connections from the IC to the fuse?
Show good clear high res straight shot of the whole top and bottom side of the board, I also need the P/N of the main board (P/N of...
Forum: Troubleshooting TVs and Video Sources Yesterday, 09:46 PM
Replies: 17
Views: 121
Posted By budm
Re: Sony SMPS No backlight

Well, R317 (white body) is bad then, in post 6 you indicated that it is tested good.
Forum: Troubleshooting TVs and Video Sources Yesterday, 02:26 PM
Replies: 17
Views: 121
Posted By budm
Re: Sony SMPS No backlight

You need to verify that the parts connected between Gate of the MOSFET's and the Isolated Gate drive transformer (T302) are not damaged.
BTW, at this you do not even see the backlights flash on for...
Forum: Troubleshooting TVs and Video Sources Yesterday, 02:22 PM
Replies: 46
Views: 2,260
Posted By budm
Re: Panasonic Viera TC-L32U22 no picture

It will be small SMD fuse which can be on the top side or the bottom side of the board, you can also trace out the connection of IC4800 that should go to the fuse.
Forum: Troubleshooting TVs and Video Sources Yesterday, 12:17 PM
Replies: 17
Views: 121
Posted By budm
Re: Sony SMPS No backlight

I think OP needs to provide the pictures of the whole backside of the TV showing all the boards.
Forum: Troubleshooting TVs and Video Sources Yesterday, 12:15 PM
Replies: 32
Views: 612
Posted By budm
Re: Samsung U60J620DAF Power and Backlights blink

107 V is the Forward Voltage of the LED string @30mA of driven current.
Forum: Troubleshooting TVs and Video Sources Yesterday, 11:12 AM
Replies: 13
Views: 105
Posted By budm
Forum: Troubleshooting TVs and Video Sources Yesterday, 11:08 AM
Replies: 46
Views: 2,260
Posted By budm
Re: Panasonic Viera TC-L32U22 no picture

But your LCD panel uses integrated T-CON, not separated T-CON like in the other threads.
If you do have 12V on one of those pin of the LVDS connector pin then at least we know that the main board...
Forum: Troubleshooting TVs and Video Sources Yesterday, 11:03 AM
Replies: 13
Views: 105
Posted By budm
Re: Samsung C32HG70 Curved Gaming Monitor - No Power

That is the PFC Controller IC.
"Without knowing what the original filter chokes are, how can i spec them?" Search for the replacement using P/N as printed on it.
Forum: Troubleshooting TVs and Video Sources Yesterday, 10:50 AM
Replies: 17
Views: 121
Posted By budm
Re: Sony SMPS No backlight

Are you 100% sure that fusible resistor R317 is good and it shows really low Ohm?
Q302 for the inverter circuit tested a shorted, was it shorted between Gate and Drain?
Forum: Troubleshooting TVs and Video Sources Yesterday, 10:45 AM
Replies: 17
Views: 121
Posted By budm
Re: Sony SMPS No backlight

I asksed Dannyx to see if he can provide the info.
https://www.badcaps.net/forum/showthread.php?t=73237
Forum: General Electronics Technical Discussion Yesterday, 10:43 AM
Replies: 17
Views: 219
Posted By budm
Re: Ask for Sony manuals

Hi Dannyx,
What kind of info do you have on this SONY model KDL-40S4100? Especially that power supply board DPS-245BP A. Thanks.
It is for this thread:...
Forum: Troubleshooting TVs and Video Sources Yesterday, 10:16 AM
Replies: 13
Views: 105
Posted By budm
Re: Samsung C32HG70 Curved Gaming Monitor - No Power

SA = Surge Arrester, it should show open circuit.
No need to mess with those part, the circuit does not need those SA to function.
So the power MOSFET for the PFC shorted out, you will need to...
Forum: Troubleshooting TVs and Video Sources 12-09-2018, 05:38 PM
Replies: 17
Views: 121
Posted By budm
Re: Sony SMPS No backlight

Model of the TV will help.
Forum: Troubleshooting TVs and Video Sources 12-09-2018, 02:02 AM
Replies: 49
Views: 574
Posted By budm
Re: Jensen JE1907DC 12v RV TV

That was one of the reason I ask OP to check the resistance of the switches (not pushed) to see if it has leakage resistance or not.
Forum: Troubleshooting Audio Equipment 12-09-2018, 01:17 AM
Replies: 9
Views: 107
Posted By budm
Re: Logitech X-230 PC subwoofer powerless

May be you can upload good clear pictures for us to look at.
Forum: Troubleshooting TVs and Video Sources 12-09-2018, 12:53 AM
Replies: 10
Views: 111
Posted By budm
Re: SAMSUNG UN37EH5000FXZA No BL or Pic

Without schematic that matched your board it will not be easy work, you can spend lots of times on it and may not getting anywhere with it but that how it goes sometime.
You may try locating some...
Forum: Troubleshooting TVs and Video Sources 12-09-2018, 12:51 AM
Replies: 6
Views: 71
Posted By budm
Re: Picture Issues with tv. LG 55lv5500

That is the Blank PCB P/N as explained.
See the white sticker with '47LVxxxx-UA' that sticker tells you that PCB assembly is made for 47LVxxx TV model. EBT or EBR on the barcode sticker is for the...
Forum: Troubleshooting TVs and Video Sources 12-08-2018, 11:05 PM
Replies: 6
Views: 71
Posted By budm
Re: Picture Issues with tv. LG 55lv5500

The EAX??? white silkscreen as printed on the main board PCB is the Blank PCB P/N, the blank PCB can be stuffed with different parts to make many different PCB assemblies for the needed TV model...
Forum: Troubleshooting TVs and Video Sources 12-08-2018, 04:01 PM
Replies: 13
Views: 99
Posted By budm
Re: Toshiba 40rl958 power issues

I t may help if you upload good clear pictures of the whole back side of the TV showing all the board and then good clear straight shot of the whole top side of the main board.
What kind of Voltage...
Forum: Troubleshooting TVs and Video Sources 12-08-2018, 02:35 PM
Replies: 22
Views: 271
Posted By budm
Re: Sony KDL-60W630B Issues! Please Help!

You should buy LED tester so you can test the LED strings without opening the LCD panel, it will at least tell you if you have open circuit in the LED string or not.
Forum: Troubleshooting TVs and Video Sources 12-08-2018, 02:33 PM
Replies: 26
Views: 355
Posted By budm
Re: Samsung UE22ES5000 Led tv no standby

That is strange reading of 295 Ohms.
Can you un-solder the Source pin of switched 12V MOSFET (QM861) to see if 5V will be stable?
It drives me crazy too since it is just simple always on power...
Forum: Troubleshooting TVs and Video Sources 12-08-2018, 02:24 PM
Replies: 11
Views: 104
Posted By budm
Re: Samsung TV with black screen

Please upload good clear straight shot pictures of the whole T-CON board and also the whole back side of the TV showing all the boards.
Forum: Troubleshooting TVs and Video Sources 12-08-2018, 01:06 AM
Replies: 22
Views: 271
Posted By budm
Re: Sony KDL-60W630B Issues! Please Help!

1) It can be bad connector on the LED strip.
2) wire to the strip may have gone open circuit.
3) It can be LED burnt out and gone open circuit.

You will have to take that 60" LCD panel a part to...
Forum: Troubleshooting TVs and Video Sources 12-07-2018, 10:31 PM
Replies: 22
Views: 271
Posted By budm
Re: Sony KDL-60W630B Issues! Please Help!

CN6801
#1 88V topped out 147V...45..21..3
#2 88V topped out 147V...50..25...3.3
#3 84V topped out 149V...50..30.13..3
#4 86V topped out 150V...40..20..3.3

CN6802
#1 54V topped out...
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