Panasonic TC-L47E5 LED TV blinking red power light PLEASE HELP

[sergio2013]

I push the power button and the power led turns a solid red as if its trying to turn on the just starts flashing red infinity with a one blink code with a few seconds pause in between and just keeps doing the same thing over and over. Any Ideas? what does a one blink code mean on this model anyone know?

[sergio2013]

Re: Panasonic TC-L47E5 LED TV blinking red power light PLEASE HELP

Still need help on this one. Anyone know what I can check? the service manual says the one blink is the panel inverter. I replaced the LED driver board which i'm assuming is the inverter and its doing the same thing.

[martino]

Re: Panasonic TC-L47E5 LED TV blinking red power light PLEASE HELP

You should take pictures from all the boards,preferably with the macro setting on your camera/phone.
Also,take a picture of the connector that goes from your power supply to the mainboard,try to include the "legend " for that connector,which should be printed on the board near the connector.
That way the pro's here have something to guide you on in trouble shooting the TV..

[sergio2013]

Re: Panasonic TC-L47E5 LED TV blinking red power light PLEASE HELP

You should take pictures from all the boards,preferably with the macro setting on your camera/phone.
Also,take a picture of the connector that goes from your power supply to the mainboard,try to include the "legend " for that connector,which should be printed on the board near the connector.
That way the pro's here have something to guide you on in trouble shooting the TV..

the problem with that is this set does not have any legends on the boards also it goes into protect mode so I cant even measure voltages.

[tom66]

Re: Panasonic TC-L47E5 LED TV blinking red power light PLEASE HELP

Manuals available here, pin outs probably available
http://elektrotanya.com/?q=showresult

The E50/E54 are very similar to E5.

[sfernandes]

Re: Panasonic TC-L47E5 LED TV blinking red power light PLEASE HELP

Manuals available here, pin outs probably available
http://elektrotanya.com/?q=showresult

The E50/E54 are very similar to E5.

Hi Tom,

It's Sergio2013 here, I just changed my username because this one is easier for me to remember. Anyways I'm stuck with this TV. I do have the service manual. I measured the voltage on the power supply at power up I'm supposed to have 24 Volts and I'm getting 0.034 volts only so thought it was the power supply I just got power supply put it in and same problem. I have also changed the LED driver board with same problem. What can this be?

[tom66]

Re: Panasonic TC-L47E5 LED TV blinking red power light PLEASE HELP

Can you see a power on or similar signal (like PS ON) on the power board? Do the other voltages for example like 12V rise?

[sfernandes]

Re: Panasonic TC-L47E5 LED TV blinking red power light PLEASE HELP

Can you see a power on or similar signal (like PS ON) on the power board? Do the other voltages for example like 12V rise?

The power board has no legend. I'm not getting the 24 volts at power on as the service manual says I should be getting, but I am getting the 3.3 volts on BL-On.

[sfernandes]

Re: Panasonic TC-L47E5 LED TV blinking red power light PLEASE HELP

Here is a picture. Don't know if this could help any.

[sfernandes]

Re: Panasonic TC-L47E5 LED TV blinking red power light PLEASE HELP

I cant believe that nobody can help me with this? there has to be someone that can help. I already sunk $100 into it and its still not working. Can someone please help so I don't sink another $100.

[tom66]

Re: Panasonic TC-L47E5 LED TV blinking red power light PLEASE HELP

24V will only come on when Q7402 turns on, due to negative Vgs. This will only occur when Q7401 pulls its gate low, which will occur if SUB-ON goes high. If SUB-ON does not go high it's the A board.

[sfernandes]

Re: Panasonic TC-L47E5 LED TV blinking red power light PLEASE HELP

24V will only come on when Q7402 turns on, due to negative Vgs. This will only occur when Q7401 pulls its gate low, which will occur if SUB-ON goes high. If SUB-ON does not go high it's the A board.

Which is the SUB-ON? there are lots of subs according to the service manual? I have attached another picture showing all the subs on the A board.

[tw2005]

Re: Panasonic TC-L47E5 LED TV blinking red power light PLEASE HELP

He may mean 9.2. Detailed Block Diagram (1/2)

connector P2, pin 7 on P-board from A02 , pin 13 A-board generated from IC5000 A-board

[sfernandes]

Re: Panasonic TC-L47E5 LED TV blinking red power light PLEASE HELP

He may mean 9.2. Detailed Block Diagram (1/2)

connector P2, pin 7 on P-board from A02 , pin 13 A-board generated from IC5000 A-board

I'm sorry, but i'm a little confused. Can you explain this in better detail please?

[tw2005]

Re: Panasonic TC-L47E5 LED TV blinking red power light PLEASE HELP

Do you have the service manual? Go to section 9.2 and on that first page it hasPSU connector P2, A board connector A02 labelled sub-on. On the next page that traces back to IC5000 on the A-board.

I think that was what Tom meant by sub-on. You asked which sub-on and then said there are lots of subs along with the sub voltages list but Tom is talking about the sub-on command from the A-board.
"24V will only come on when Q7402 turns on, due to negative Vgs. This will only occur when Q7401 pulls its gate low, which will occur if SUB-ON goes high. If SUB-ON does not go high it's the A board"

[sfernandes]

Re: Panasonic TC-L47E5 LED TV blinking red power light PLEASE HELP

Do you have the service manual? Go to section 9.2 and on that first page it hasPSU connector P2, A board connector A02 labelled sub-on. On the next page that traces back to IC5000 on the A-board.

I think that was what Tom meant by sub-on. You asked which sub-on and then said there are lots of subs along with the sub voltages list but Tom is talking about the sub-on command from the A-board.
"24V will only come on when Q7402 turns on, due to negative Vgs. This will only occur when Q7401 pulls its gate low, which will occur if SUB-ON goes high. If SUB-ON does not go high it's the A board"

I do have the service manual and I go to that section and it shows the main board not the PSU. I measured what I think was right, but not sure if I did it correctly

connector P2, pin 7 on P-board from A02 the voltage is 2.475

pin 13 A-board generated from IC5000 A-board the voltage is 0.192, but sometimes goes higher to like 0.800 and sometimes goes lower to 0.080.

What do you all gather from these measurments?

Pin 13 was measured on the P board on the A02 connector. Did I do it right?

I must have lots of learning to do because I don't understand how to read those pictures at all. Very confusing. I just need to know what pin numbers to put the probe on and on which connector and on which board and I can do it.

Can the Sub-on voltage be tested on the P board on connector P2? if so what would the pin number be?

This TV is terrible to work on, there is no legend on any boards.

[tw2005]

Re: Panasonic TC-L47E5 LED TV blinking red power light PLEASE HELP

I'm looking at TC-L47E5X service manual, I see A,P,K boards.

Now I'm confused, pin 7 P2 on the PSU is connected to connector A02 pin 13, should give you the exact result.

Unless I have the wrong manual?

[sfernandes]

Re: Panasonic TC-L47E5 LED TV blinking red power light PLEASE HELP

I'm looking at TC-L47E5X service manual, I see A,P,K boards.

Now I'm confused, pin 7 P2 on the PSU is connected to connector A02 pin 13, should give you the exact result.

Unless I have the wrong manual?

I think you have the proper manual its the tcl47e5. Maybe you understood me wrong. All the measurements I did was on the P board on the P2 connector. I measured pin 7 and pin 13 on the P board, never measured any pins on the A board.

[tw2005]

Re: Panasonic TC-L47E5 LED TV blinking red power light PLEASE HELP

Ok , pin 7 on the P2 is correct, pin 13 on that connector is not relevant and I don't know what it all means just wanted to guide you to the sub-on. I have to go, son just blew his lid and put his foot through the wall.

[sfernandes]

Re: Panasonic TC-L47E5 LED TV blinking red power light PLEASE HELP

Ok , pin 7 on the P2 is correct, pin 13 on that connector is not relevant and I don't know what it all means just wanted to guide you to the sub-on. I have to go, son just blew his lid and put his foot through the wall.

Ok no problem so before you go do I have to measure the pin 13 on the A02 connector on the A board then?