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Search: Posts Made By: lotas
Forum: Troubleshooting TVs and Video Sources 05-02-2022, 05:31 AM
Replies: 377
Views: 19,438
Posted By lotas
Re: Can you dignose from the photo ? . Toshiba 65S2650EV

Why, where did you get the idea that the resistor is 4 ohm.
Forum: Troubleshooting TVs and Video Sources 04-03-2022, 08:27 AM
Replies: 377
Views: 19,438
Posted By lotas
Re: Can you dignose from the photo ? . Toshiba 65S2650EV

TL431 and AZ431 have different pinouts.
https://www.badcaps.net/forum/showpost.php?p=1122852&postcount=8
Forum: Troubleshooting TVs and Video Sources 03-07-2022, 02:59 PM
Replies: 377
Views: 19,438
Posted By lotas
Re: Can you dignose from the photo ? . Toshiba 65S2650EV

Then it is necessary not 1.5 Om, but 0.15 Om two resistors connected in parallel.
Forum: Troubleshooting TVs and Video Sources 03-07-2022, 01:05 PM
Replies: 377
Views: 19,438
Posted By lotas
Re: Can you dignose from the photo ? . Toshiba 65S2650EV

K-250N1 R44 = 0.075Om 2W
From the Chinese forum:...
Forum: Troubleshooting TVs and Video Sources 03-01-2022, 12:41 PM
Replies: 377
Views: 19,438
Posted By lotas
Forum: Troubleshooting TVs and Video Sources 02-24-2022, 07:06 AM
Replies: 377
Views: 19,438
Posted By lotas
Re: Can you dignose from the photo ? . Toshiba 65S2650EV

Maybe something will help to figure it out (without the denominations of the components).
Forum: Troubleshooting TVs and Video Sources 02-24-2022, 04:44 AM
Replies: 377
Views: 19,438
Posted By lotas
Re: Can you dignose from the photo ? . Toshiba 65S2650EV

To do this, they put power capacitors at 450v so that they have a voltage margin = 380-400v. (PFC operation).
Forum: Troubleshooting TVs and Video Sources 02-21-2022, 06:43 PM
Replies: 377
Views: 19,438
Posted By lotas
Re: Can you dignose from the photo ? . Toshiba 65S2650EV

Check this garland of resistors, the resistance has not changed in them, and where does the second output of the resistor R37 go?
Forum: Troubleshooting TVs and Video Sources 01-19-2022, 01:02 PM
Replies: 377
Views: 19,438
Posted By lotas
Re: Can you dignose from the photo ? . Toshiba 65S2650EV

IC2 immediately had to be changed, the resistor R37 burned out for a reason.
Forum: Troubleshooting TVs and Video Sources 01-09-2022, 05:37 AM
Replies: 377
Views: 19,438
Posted By lotas
Forum: Troubleshooting TVs and Video Sources 01-07-2022, 05:40 AM
Replies: 377
Views: 19,438
Posted By lotas
Re: Can you dignose from the photo ? . Toshiba 65S2650EV

So put the native 817 and 431 back in place.
"431" comes with a different pinout
Forum: Troubleshooting TVs and Video Sources 01-07-2022, 04:05 AM
Replies: 377
Views: 19,438
Posted By lotas
Re: Can you dignose from the photo ? . Toshiba 65S2650EV

If the resistor burns out, then most likely the NCP1653A also burned out.
Forum: Troubleshooting TVs and Video Sources 01-06-2022, 03:53 PM
Replies: 377
Views: 19,438
Posted By lotas
Re: Can you dignose from the photo ? . Toshiba 65S2650EV

It looks like the R37 resistor has burned out.
Forum: Troubleshooting TVs and Video Sources 12-25-2021, 01:58 PM
Replies: 377
Views: 19,438
Posted By lotas
Re: Can you dignose from the photo ? . Toshiba 65S2650EV

Bet any on 600-800V, 6-8A (KBJ608G).
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