Panasonic tx50a300b 11 blinks tv wont come on

[johnjgjohn]

Hi i have panasonic tx-50a300b led lit tv from standby i press on led blinks 11 times then goes out nothing happens with tv ive replaced power supply board to n avail anyone able to help thanks john

[johnjgjohn]

Re: Panasonic tx50a300b 11 blinks tv wont come on

Im getting sound ive managed to change to my skybox and getting sound ok but no picture

[ReeceyBurger123]

Re: Panasonic tx50a300b 11 blinks tv wont come on

Images of the boards please ? Also A300 is Vestel not real Panasonic so there wont be a flash error code just the normal boot up led.

[ReeceyBurger123]

Re: Panasonic tx50a300b 11 blinks tv wont come on

Also are you getting backlight ?

[johnjgjohn]

Re: Panasonic tx50a300b 11 blinks tv wont come on

Boards

[johnjgjohn]

Re: Panasonic tx50a300b 11 blinks tv wont come on

Other board

[johnjgjohn]

Re: Panasonic tx50a300b 11 blinks tv wont come on

No it seems theres no backlight

[johnjgjohn]

Re: Panasonic tx50a300b 11 blinks tv wont come on

Back of psu

[ReeceyBurger123]

Re: Panasonic tx50a300b 11 blinks tv wont come on

Yeah Vestel shit, watch this video and test the Psu if the Led voltage is good and it should be about 200 volts plus at start up at the Led connector, if thats ok then you have a failed Led.

https://www.badcaps.net/forum/showthread.php?t=52928

[Hamie]

Re: Panasonic tx50a300b 11 blinks tv wont come on

I should have full replacment led strips for this model, you live fairly close to me let me know if you want a couple.

[ReeceyBurger123]

Re: Panasonic tx50a300b 11 blinks tv wont come on

Please dont fail and crack or ruin the screen though when taking it apart !

[johnjgjohn]

Re: Panasonic tx50a300b 11 blinks tv wont come on

I should have full replacment led strips for this model, you live fairly close to me let me know if you want a couple.

Hey hamie how much u talking about for led strips

[johnjgjohn]

Re: Panasonic tx50a300b 11 blinks tv wont come on

Hello ok so ive stripped down screen and when i turn on set im getting a flash for split second ive recorded video the picked out the frame when they are on and all leds are lit does this mean the led sets are ok ? If so what would cause it to do this ive checked voltage going to led and it goes up to nearly 200v yhen slowly drops down

[johnjgjohn]

Re: Panasonic tx50a300b 11 blinks tv wont come on

Pic of leds

[dick_barton]

Re: Panasonic tx50a300b 11 blinks tv wont come on

Is there any discolouration around any of the leds where they may be overheating?

[ReeceyBurger123]

Re: Panasonic tx50a300b 11 blinks tv wont come on

The Leds are, its probably the little connectors that limk the strips together that have broken down. Watch my video and you will see how to sort this by bridging over the little connectors.

[johnjgjohn]

Re: Panasonic tx50a300b 11 blinks tv wont come on

The strips are in one peice are u talking about the distributer board? Ive checked each from board to strip and they seemed ok this one doesnt have joining bits to join 2 strips like others ive seen

[johnjgjohn]

Re: Panasonic tx50a300b 11 blinks tv wont come on

The Leds are, its probably the little connectors that limk the strips together that have broken down. Watch my video and you will see how to sort this by bridging over the little connectors.

Ok so i decided to solder each strip to board to bypass connectors but still the same😞

[johnjgjohn]

Re: Panasonic tx50a300b 11 blinks tv wont come on

Also ive tested each individual led with 3.2v direct they all light

[johnjgjohn]

Re: Panasonic tx50a300b 11 blinks tv wont come on

Reecey see when i test in standby from chassis to red im getting 11.5v then goes to 200v wen on then drops back down is that ok i noticed in u vid yours starts at 24v