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Versión actual por: oldturkey03 ,

Texto:

@roxann2010 try to post some good pictures of the individual boards. The boards are not easily to inspect on the images you posted. The one time short blink of the screen sound like your backlight is coming on just to turn back off. The board on the bottom of your TV is your t-con board. It could be (unlikely) the fault Since you have no audio, this could be a standby issue as well as a failed main board. Check all board for leaking, domed looking capacitors or other obviously damaged looking components
 
=== Update (04/30/2018) ===
 
Check the fuse on the T-con board for a. continuity and b. for power once you have all the boards properly connected again.
 
[image|1440831]
 
You also want to check the sub t-con board for power in on J11 and power to the panel on J2. you may have to solder pigtails to the bottom nd measure the voltages as shown on the board.
 
[image|1440836]
 
you can of course further check that board by measuring the voltages on the test points (TP) all voltages are DC and your set has to be on for voltages to be measured. you do want to be careful that you do not shorten out components etc. with your test probes.
 
=== Update (05/29/2018) ===
 
On your main board (CV6488H-A )you should have two fuses. Check for continuity and check for power as well. Remember that your issues could be from the power board not supplying power to the backlight (you already replaced yours so that should have eliminate this) or from the main board for not turning it on etc., (my prime candidate at this time).
 
[image|1470220]
 
Had to borrow a picture online since yors is a "bit" fuzzy ;-) Interestingly enough the main board actually comes back as being for a Westinghouse WD50UT4300 TW-02601-A050G I wonder if they are rebranded? Does Toshiba not own Westinghouse? That would be bad for us since Toshiba is right up there with Apple, Vizio and other conglomerates that are as secretive as the Knights Templar without their sanctity. Not relevant to your problem, just interesting.
 
=== Update (05/30/2018) ===
 
[https://www.ifixit.com/User/2472140/Robert+Jacobs|++@roxann2010++]  last test will be to test the connector on your power board as marked. The expected values are in a printed box above the connector. Interested in BL-On, PS/On and VSTB Let us know what those voltages are. Not sure about Panasonic TV’s but try to disconnect the cable from the power board to the main board. See if that turns the backlight on. [image|1471592]

Estatus:

open

Editado por: oldturkey03 ,

Texto:

@roxann2010 try to post some good pictures of the individual boards. The boards are not easily to inspect on the images you posted. The one time short blink of the screen sound like your backlight is coming on just to turn back off. The board on the bottom of your TV is your t-con board. It could be (unlikely) the fault Since you have no audio, this could be a standby issue as well as a failed main board. Check all board for leaking, domed looking capacitors or other obviously damaged looking components
 
=== Update (04/30/2018) ===
 
Check the fuse on the T-con board for a. continuity and b. for power once you have all the boards properly connected again.
 
[image|1440831]
 
You also want to check the sub t-con board for power in on J11 and power to the panel on J2. you may have to solder pigtails to the bottom nd measure the voltages as shown on the board.
 
[image|1440836]
 
you can of course further check that board by measuring the voltages on the test points (TP) all voltages are DC and your set has to be on for voltages to be measured. you do want to be careful that you do not shorten out components etc. with your test probes.
 
=== Update (05/29/2018) ===
 
On your main board (CV6488H-A )you should have two fuses. Check for continuity and check for power as well. Remember that your issues could be from the power board not supplying power to the backlight (you already replaced yours so that should have eliminate this) or from the main board for not turning it on etc., (my prime candidate at this time).
 
[image|1470220]
 
Had to borrow a picture online since yors is a "bit" fuzzy ;-) Interestingly enough the main boarboard actually comes back as being for a Westinghouse WD50UT4300 TW-02601-A050G I wonder if they are rebranded? Does Toshiba not own Westinghouse? That would be bad for us since Toshiba is right up there with AppleApple, Vizio and other conglomerates that are as secretive as the Knights Templar without their sanctity. Not relevant to your problem, just interesting.
Had to borrow a picture online since yors is a "bit" fuzzy ;-) Interestingly enough the main boarboard actually comes back as being for a Westinghouse WD50UT4300 TW-02601-A050G I wonder if they are rebranded? Does Toshiba not own Westinghouse? That would be bad for us since Toshiba is right up there with AppleApple, Vizio and other conglomerates that are as secretive as the Knights Templar without their sanctity. Not relevant to your problem, just interesting.

Estatus:

open

Editado por: oldturkey03 ,

Texto:

@roxann2010 try to post some good pictures of the individual boards. The boards are not easily to inspect on the images you posted. The one time short blink of the screen sound like your backlight is coming on just to turn back off. The board on the bottom of your TV is your t-con board. It could be (unlikely) the fault Since you have no audio, this could be a standby issue as well as a failed main board. Check all board for leaking, domed looking capacitors or other obviously damaged looking components
 
=== Update (04/30/2018) ===
 
Check the fuse on the T-con board for a. continuity and b. for power once you have all the boards properly connected again.
 
[image|1440831]
 
You also want to check the sub t-con board for power in on J11 and power to the panel on J2. you may have to solder pigtails to the bottom nd measure the voltages as shown on the board.
 
[image|1440836]
 
you can of course further check that board by measuring the voltages on the test points (TP) all voltages are DC and your set has to be on for voltages to be measured. you do want to be careful that you do not shorten out components etc. with your test probes.
 
=== Update (05/29/2018) ===
 
On your main board (CV6488H-A )you should have two fuses. Check for continuity and check for power as well. Remember that your issues could be from the power board not supplying power to the backlight (you already replaced yours so that should have eliminate this) or from the main board for not turning it on etcetc., (my prime candidate at this time).
On your main board (CV6488H-A )you should have two fuses. Check for continuity and check for power as well. Remember that your issues could be from the power board not supplying power to the backlight (you already replaced yours so that should have eliminate this) or from the main board for not turning it on etcetc., (my prime candidate at this time).
 
[image|1470220]
 
Had to borrow a picture online since yors is a "bit" fuzzy ;-) Interestingly enough the main boar actually comes back as being for a Westinghouse WD50UT4300 TW-02601-A050G I wonder if they are rebranded? Does Toshiba not own Westinghouse? That would be bad for us since Toshiba is right up there with Apple Vizio and other conglomerates that are as secretive as the Knights Templar without their sanctity. Not relevant to your problem, just interesting.

Estatus:

open

Editado por: oldturkey03 ,

Texto:

@roxann2010 try to post some good pictures of the individual boards. The boards are not easily to inspect on the images you posted. The one time short blink of the screen sound like your backlight is coming on just to turn back off. The board on the bottom of your TV is your t-con board. It could be (unlikely) the fault Since you have no audio, this could be a standby issue as well as a failed main board. Check all board for leaking, domed looking capacitors or other obviously damaged looking components
 
=== Update (04/30/2018) ===
 
Check the fuse on the T-con board for a. continuity and b. for power once you have all the boards properly connected again.
 
[image|1440831]
 
You also want to check the sub t-con board for power in on J11 and power to the panel on J2. you may have to solder pigtails to the bottom nd measure the voltages as shown on the board.
 
[image|1440836]
 
you can of course further check that board by measuring the voltages on the test points (TP) all voltages are DC and your set has to be on for voltages to be measured. you do want to be careful that you do not shorten out components etc. with your test probes.
 
=== Update (05/29/2018) ===
 
On your main board (CV6488H-A )you should have two fuses. Check for continuity and check for power as well. Remember that your issues could be from the power board not supplying power to the backlight or from the main board for not turning it on etc. [image|1470220]
Had


[image|1470220]

Had
to borrow a picture online since yors is a "bit" fuzzy ;-) Interestingly enough the main boar actually comes back as being for a Westinghouse WD50UT4300 TW-02601-A050G I wonder if they are rebranded? Does Toshiba not own Westinghouse? That would be bad for us since Toshiba is right up there with Apple Vizio and other conglomerates that are as secretive as the Knights Templar without their sanctity. Not relevant to your problem, just interesting.
On your main board (CV6488H-A )you should have two fuses. Check for continuity and check for power as well. Remember that your issues could be from the power board not supplying power to the backlight or from the main board for not turning it on etc. [image|1470220]
Had


[image|1470220]

Had
to borrow a picture online since yors is a "bit" fuzzy ;-) Interestingly enough the main boar actually comes back as being for a Westinghouse WD50UT4300 TW-02601-A050G I wonder if they are rebranded? Does Toshiba not own Westinghouse? That would be bad for us since Toshiba is right up there with Apple Vizio and other conglomerates that are as secretive as the Knights Templar without their sanctity. Not relevant to your problem, just interesting.

Estatus:

open

Editado por: oldturkey03 ,

Texto:

@roxann2010 try to post some good pictures of the individual boards. The boards are not easily to inspect on the images you posted. The one time short blink of the screen sound like your backlight is coming on just to turn back off. The board on the bottom of your TV is your t-con board. It could be (unlikely) the fault Since you have no audio, this could be a standby issue as well as a failed main board. Check all board for leaking, domed looking capacitors or other obviously damaged looking components
 
=== Update (04/30/2018) ===
 
Check the fuse on the T-con board for a. continuity and b. for power once you have all the boards properly connected again. [image|1440831]
You


[image|1440831]

You
also want to check the sub t-con board for power in on J11 and power to the panel on J2. you may have to solder pigtails to the bottom nd measure the voltages as shown on the board. [image|1440836] you

[image|1440836]

you
can of course further check that board by measuring the voltages on the test points (TP) all voltages are DC and your set has to be on for voltages to be measured. you do want to be careful that you do not shorten out components etc. with your test probes.

=== Update (05/29/2018) ===

On your main board (CV6488H-A )you should have two fuses. Check for continuity and check for power as well. Remember that your issues could be from the power board not supplying power to the backlight or from the main board for not turning it on etc. [image|1470220]
Had to borrow a picture online since yors is a "bit" fuzzy ;-)
Check the fuse on the T-con board for a. continuity and b. for power once you have all the boards properly connected again. [image|1440831]
You


[image|1440831]

You
also want to check the sub t-con board for power in on J11 and power to the panel on J2. you may have to solder pigtails to the bottom nd measure the voltages as shown on the board. [image|1440836] you

[image|1440836]

you
can of course further check that board by measuring the voltages on the test points (TP) all voltages are DC and your set has to be on for voltages to be measured. you do want to be careful that you do not shorten out components etc. with your test probes.

=== Update (05/29/2018) ===

On your main board (CV6488H-A )you should have two fuses. Check for continuity and check for power as well. Remember that your issues could be from the power board not supplying power to the backlight or from the main board for not turning it on etc. [image|1470220]
Had to borrow a picture online since yors is a "bit" fuzzy ;-)

Estatus:

open

Editado por: oldturkey03 ,

Texto:

@roxann2010 try to post some good pictures of the individual boards. The boards are not easily to inspect on the images you posted. The one time short blink of the screen sound like your backlight is coming on just to turn back off. The board on the bottom of your TV is your t-con board. It could be (unlikely) the fault Since you have no audio, this could be a standby issue as well as a failed main board. Check all board for leaking, domed looking capacitors or other obviously damaged looking components
 
=== Update (04/30/2018) ===
 
Check the fuse on the T-con board for a. continuity and b. for power once you have all the boards properly connected again. [image|1440831]
You also want to check the sub t-con board for power in on J11 and power to the panel on J2. you may have to solder pigtails to the bottom nd measure the voltages as shown on the board. [image|1440836] you can of course further check that board by measuring the voltages on the test points (TP) all voltages are DC and your set has to be on for voltages to be measured. you do want to be careful that you do not shorten out components etc. with your test probes.

Estatus:

open

Aporte original por: oldturkey03 ,

Texto:

@roxann2010 try to post some good pictures of the individual boards. The boards are not easily to inspect on the images you posted. The one time short blink of the screen sound like your backlight is coming on just to turn back off. The board on the bottom of your TV is your t-con board. It could be (unlikely) the fault Since you have no audio, this could be a standby issue as well as a failed main board. Check all board for leaking, domed looking capacitors or other obviously damaged looking components

Estatus:

open