U on C809 is just 370V and I believe is not enough power to transfer in secondary circuit of power. If I disconnect tcon or just display the tv don't go to stby. Do you have diagram of powerboard HLL-4455W?

If I disconnect tcon or just display the tv don't go to stby. you don't have any issue with power i think you have an issue with lcd or t-con check lcd datasheet then compare voltage

I had the same problem. Instead of the w825 jumper, I put a 560kom resistor. FCP voltage measurement branch on c809, 3x 3.3Mom. The voltage on the c809 increased to 388V. The TV does not turn off.

If I read correctly (google translate) on C809 you have 488V. The maximum voltage supported by the capacitor is 450V. Hasn't it exploded yet?

HISENSE H49N5705 - Goes to Standby After 10-15 mins: Low U on C809, T-Con, Need HLL-4455W Diagram

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#1 17853249 18 Mar 2019 15:14

podariuv podariuv

Level 7

Post #1
17853249 18 Mar 2019 15:14

U on C809 is just 370V and I believe is not enough power to transfer in secondary circuit of power.
If I disconnect tcon or just display the tv don't go to stby.
Do you have diagram of powerboard HLL-4455W?
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#2 17950192 08 May 2019 14:16

JALILALZAKI JALILALZAKI

Level 2

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Post #2
17950192 08 May 2019 14:16

""If I disconnect tcon or just display the tv don't go to stby. ""

you don't have any issue with power i think you have an issue with lcd or t-con
check lcd datasheet then compare voltage
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#3 20299302 23 Nov 2022 13:54

JacekRTV JacekRTV

Level 16

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Post #3
20299302 23 Nov 2022 13:54

I had the same problem.
Instead of the w825 jumper, I put a 560kom resistor.
FCP voltage measurement branch on c809, 3x 3.3Mom.
The voltage on the c809 increased to 388V.
The TV does not turn off.
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#4 20299312 23 Nov 2022 14:05

yokoono51 yokoono51

Level 26

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Post #4
20299312 23 Nov 2022 14:05

If I read correctly (google translate) on C809 you have 488V. The maximum voltage supported by the capacitor is 450V. Hasn't it exploded yet?
#5 20299323 23 Nov 2022 14:11

JacekRTV JacekRTV

Level 16

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Post #5
20299323 23 Nov 2022 14:11

Corrected to 388V, thanks.
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HISENSE H49N5705 - Goes to Standby After 10-15 mins: Low U on C809, T-Con, Need HLL-4455W Diagram

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