Ga door naar hoofdinhoud

Repareer je spullen

Recht op reparatie

Winkel

Help

Deze versie is geschreven door: Johnny K ,

Titel:

No backlight, but displays picture

Tekst:

Hi everyone!

I’m needing help trying to fix my TV. I have a D55un-e1, and the power supply board has the LED driver parts included (PLTVHU401XABV) [https://www.shopjimmy.com/vizio-pltvhu401xabv-power-supply-led-driver-board/#mz-expanded-view-729125701912|Hyperlink] to see picture of the board.

Did the flashlight test - there is picture, but NO backlight.  Haven’t checked sound, but I’m assuming that it works since image shows (probable sign of T-Con and Main boards working).

I used the multimeter to test connection points on the main driver that goes directly into the panel. There are only 2 types of actual points - VLED and VLED 1. Everytime I read the points, I only get readings from VLEDs, but 0’s from VLED 1s. With the power on, I get the reading of 33.5 from all VLED points (only about 4 of them) and 0’s from VLED1 points.

[image|2303921]

What could be the issue? I know it’s probably the LED inverters/driver board section of the power supply board, but I don’t see any burn marks nor lose capacitors/parts. I’m pretty new to this TV-fixing-realm, so I have no idea what could be the issue. I’ve even replaced the main board as well.

Would really appreciate the help!

=== Update (01/20/2021) ===

Thanks again for your help! I got my led tester, but with this power supply/led driver board, I’m not too sure where to stick the positive and negative needles (?)

Would you happen to know which goes where?

[image|2305658]

[image|2305661]

Really appreciate it!

Apparaat:

Vizio Television

Status:

open

Goedgekeurd antwoord:

676411

Bewerkt door: Johnny K ,

Titel:

No backlight, but displays picture

Tekst:

Hi everyone!
 
I’m needing help trying to fix my TV. I have a D55un-e1, and the power supply board has the LED driver parts included (PLTVHU401XABV) [https://www.shopjimmy.com/vizio-pltvhu401xabv-power-supply-led-driver-board/#mz-expanded-view-729125701912|Hyperlink] to see picture of the board.
 
Did the flashlight test - there is picture, but NO backlight. Haven’t checked sound, but I’m assuming that it works since image shows (probable sign of T-Con and Main boards working).
 
I used the multimeter to test connection points on the main driver that goes directly into the panel. There are only 2 types of actual points - VLED and VLED 1. Everytime I read the points, I only get readings from VLEDs, but 0’s from VLED 1s. With the power on, I get the reading of 33.5 from all VLED points (only about 4 of them) and 0’s from VLED1 points.
 
[image|2303921]
 
What could be the issue? I know it’s probably the LED inverters/driver board section of the power supply board, but I don’t see any burn marks nor lose capacitors/parts. I’m pretty new to this TV-fixing-realm, so I have no idea what could be the issue. I’ve even replaced the main board as well.
 
Would really appreciate the help!
 
=== Update (01/20/2021) ===
 
Thanks again for your help! I got my led tester, but with this power supply/led driver board, I’m not too sure where to stick the positive and negative needles (?)
 
Would you happen to know which goes where?
 
[image|2305658]
 
[image|2305661]
 
Really appreciate it!

Apparaat:

Vizio Television

Status:

open

Goedgekeurd antwoord:

676411

Bewerkt door: Johnny K ,

Titel:

No backlight, but displays picture

Tekst:

Hi everyone!
 
I’m needing help trying to fix my TV. I have a D55un-e1, and the power supply board has the LED driver parts included (PLTVHU401XABV) [https://www.shopjimmy.com/vizio-pltvhu401xabv-power-supply-led-driver-board/#mz-expanded-view-729125701912|Hyperlink] to see picture of the board.
 
Did the flashlight test - there is picture, but NO backlight. Haven’t checked sound, but I’m assuming that it works since image shows (probable sign of T-Con and Main boards working).
 
I used the multimeter to test connection points on the main driver that goes directly into the panel. There are only 2 types of actual points - VLED and VLED 1. Everytime I read the points, I only get readings from VLEDs, but 0’s from VLED 1s. With the power on, I get the reading of 33.5 from all VLED points (only about 4 of them) and 0’s from VLED1 points.
 
[image|2303921]
 
What could be the issue? I know it’s probably the LED inverters/driver board section of the power supply board, but I don’t see any burn marks nor lose capacitors/parts. I’m pretty new to this TV-fixing-realm, so I have no idea what could be the issue. I’ve even replaced the main board as well.
 
Would really appreciate the help!
 
=== Update (01/20/2021) ===
Thanks again for your help! I got my led tester, but with this power supply/led driver board, I’m not too sure where to stick the positive and negative needles (?)
 
Would you happen to know which goes where?
 
[image|2305658]
 
[image|2305661]
 
Really appreciate it!

Apparaat:

Vizio Television

Status:

open

Bewerkt door: Johnny K ,

Titel:

No backlight, but displays picture

Tekst:

Hi everyone!
 
I’m needing help trying to fix my TV. I have a D55un-e1, and the power supply board has the LED driver parts included (PLTVHU401XABV) [https://www.shopjimmy.com/vizio-pltvhu401xabv-power-supply-led-driver-board/#mz-expanded-view-729125701912|Hyperlink] to see picture of the board.
 
Did the flashlight test - there is picture, but NO backlight. Haven’t checked sound, but I’m assuming that it works since image shows (probable sign of T-Con and Main boards working).
 
I used the multimeter to test connection points on the main driver that goes directly into the panel. There are only 2 types of actual points - VLED and VLED 1. Everytime I read the points, I only get readings from VLEDs, but 0’s from VLED 1s. With the power on, I get the reading of 33.5 from all VLED points (only about 4 of them) and 0’s from VLED1 points.
 
[image|2303917image|2303921]
[image|2303917image|2303921]
 
What could be the issue? I know it’s probably the LED inverters/driver board section of the power supply board, but I don’t see any burn marks nor lose capacitors/parts. I’m pretty new to this TV-fixing-realm, so I have no idea what could be the issue. I’ve even replaced the main board as well.
 
Would really appreciate the help!

Apparaat:

Vizio Television

Status:

open

Origineel bericht door: Johnny K ,

Titel:

No backlight, but displays picture

Tekst:

Hi everyone!

I’m needing help trying to fix my TV. I have a D55un-e1, and the power supply board has the LED driver parts included (PLTVHU401XABV) [https://www.shopjimmy.com/vizio-pltvhu401xabv-power-supply-led-driver-board/#mz-expanded-view-729125701912|Hyperlink] to see picture of the board.

Did the flashlight test - there is picture, but NO backlight.  Haven’t checked sound, but I’m assuming that it works since image shows (probable sign of T-Con and Main boards working).

I used the multimeter to test connection points on the main driver that goes directly into the panel. There are only 2 types of actual points - VLED and VLED 1. Everytime I read the points, I only get readings from VLEDs, but 0’s from VLED 1s. With the power on, I get the reading of 33.5 from all VLED points (only about 4 of them) and 0’s from VLED1 points.

[image|2303917]

What could be the issue? I know it’s probably the LED inverters/driver board section of the power supply board, but I don’t see any burn marks nor lose capacitors/parts. I’m pretty new to this TV-fixing-realm, so I have no idea what could be the issue. I’ve even replaced the main board as well.

Would really appreciate the help!

Apparaat:

Vizio Television

Status:

open