| Ремонт: Ноутбуков, Компьютеров https://vlab.su/ |
|
| Samsung tv problem led ligt .. https://vlab.su/viewtopic.php?f=247&t=97357 |
Страница 1 из 1 |
| bokin021 [ 07 дек 2019, 21:28 ] | |
| Заголовок сообщения: | Samsung tv problem led ligt .. |
I have burn some resistor ,i dont have schematic and i could not understand what was there i have pictures..Led lamp are ok.. |
|
| mia [ 07 дек 2019, 22:38 ] | |
| Заголовок сообщения: | Re: Samsung tv problem led ligt .. |
May be this help to you https://tel-spb.ru/remont-tv-lcd/samsun ... 00460A.pdf https://elektrotanya.com/samsung_bn44-0 ... ad.html#dl |
|
| bokin021 [ 08 дек 2019, 08:51 ] | |
| Заголовок сообщения: | Re: Samsung tv problem led ligt .. |
No,cant help me because i dont see value if resistor,but anyway thanks. |
|
| mia [ 08 дек 2019, 10:01 ] | |
| Заголовок сообщения: | Re: Samsung tv problem led ligt .. |
Not all resistors burned out. If on some you can read the markings, then others are the same. |
|
| bokin021 [ 08 дек 2019, 10:39 ] | |
| Заголовок сообщения: | Re: Samsung tv problem led ligt .. |
I cant read and i replace other resistor which are value ..But they are also burn now..Only schematic can help me.. |
|
| bokin021 [ 10 дек 2019, 21:56 ] | |
| Заголовок сообщения: | Re: Samsung tv problem led ligt .. |
maybe can help me? |
|
| mia [ 10 дек 2019, 23:35 ] | |
| Заголовок сообщения: | Re: Samsung tv problem led ligt .. |
In two branches of the circuit there should be three parallel resistors simultaneously of the same rating. If they continue to burn, and everything is ok with the LEDs, then increased voltage is applied, which is wrong. |
|
| bokin021 [ 11 дек 2019, 09:41 ] | |
| Заголовок сообщения: | Re: Samsung tv problem led ligt .. |
I dont know what resistore was there,i cant sre mark..I need value and then i will search issue.. |
|
| mia [ 11 дек 2019, 09:47 ] | |
| Заголовок сообщения: | Re: Samsung tv problem led ligt .. |
If you do not see the label, then try to measure the resistance of each of the remaining resistors in the photo. |
|
| bokin021 [ 11 дек 2019, 10:35 ] | |
| Заголовок сообщения: | Re: Samsung tv problem led ligt .. |
I mesure voltage it is 280 v but I wonder what is output voltage for lamps?I thing resistors Mark is 361 ..I m not sure ,because is not visible. |
|
| mia [ 11 дек 2019, 10:44 ] | |
| Заголовок сообщения: | Re: Samsung tv problem led ligt .. |
Unsolder all problem resistors and measure the resistance of each. |
|
| bokin021 [ 11 дек 2019, 11:37 ] | |
| Заголовок сообщения: | Re: Samsung tv problem led ligt .. |
320 ,280 ohm |
|
| mia [ 11 дек 2019, 12:21 ] | |
| Заголовок сообщения: | Re: Samsung tv problem led ligt .. |
Нow many resistors are 320, and how many are 280 ? |
|
| bokin021 [ 11 дек 2019, 13:52 ] | |
| Заголовок сообщения: | Re: Samsung tv problem led ligt .. |
two resistors are burn others are around 340 ohm .. |
|
| mia [ 11 дек 2019, 15:19 ] | |
| Заголовок сообщения: | Re: Samsung tv problem led ligt .. |
Try solder all new with 330 ohm resistance and corresponded power dissipation. |
|
| bokin021 [ 12 дек 2019, 10:01 ] | |
| Заголовок сообщения: | Re: Samsung tv problem led ligt .. |
I change resistor but anyway burning..What more can be problem? |
|
| mia [ 12 дек 2019, 14:25 ] | |
| Заголовок сообщения: | Re: Samsung tv problem led ligt .. |
If you put all six resistors and they burned out, then the current in the circuit is exceeded. This may be due to excess voltage source or lower load resistance. Try drawing a circuit by the PCB using reverse engineering. Why did you decide that the backlight diodes are working ? |
|
| bokin021 [ 12 дек 2019, 19:41 ] | |
| Заголовок сообщения: | Re: Samsung tv problem led ligt .. |
I put 2×1 ohm 2A resistor and know sometimes litle bit blinking,but it is ok..I hoppe will be good..Thanks lot for help!! |
|
| Страница 1 из 1 | Часовой пояс: UTC + 4 часа |
| Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group http://www.phpbb.com/ |
|