Panasonic VIERA TC-L32X5 - One LED blink

[dick_barton]

Re: Panasonic VIERA TC-L32X5 - One LED blink

Additional photo?

404. That’s an error.

The requested URL was not found on this server. That’s all we know.

[dick_barton]

Re: Panasonic VIERA TC-L32X5 - One LED blink

With your meter across the two legs of the capacitor C7806, what voltage do you have when you first switch on. It may just spike and then drop just as quickly.

46V sounds awful low when the capacitor is rated at 160V so I would expect around 120V DC.

What voltage is at TP7501 (D7507)?

How many leds are in each strip. I believe they are 6V leds so should give a better idea of what the voltage should be. (6V x Number of leds in the strip)

[WannaTheater]

Re: Panasonic VIERA TC-L32X5 - One LED blink

Link fixed- The additional photos are showing the two LED strips, and the one that goes *almost* completely dark after all the LEDs flash on really bright.

It looks like each strip has about 36 LEDs.

C7806 starts at 46VDC, then jumps up to 135V, where is stays until the TV shuts itself off.

[dick_barton]

Re: Panasonic VIERA TC-L32X5 - One LED blink

135V at the leds would appear to be correct. If they were connected as one strip of 36 leds x 3V = 108V which is more than enough to keep the leds on.

[dick_barton]

Re: Panasonic VIERA TC-L32X5 - One LED blink

Can you post pictures of the power supply board especially the area around the led circuitry top and bottom. Nice and sharp so you can see the connections and components

[WannaTheater]

Re: Panasonic VIERA TC-L32X5 - One LED blink

Done.. The best I could do. There are no visible discolorations, puffy/leaking/smelling like fish caps, etc with the exception of diode D7306 (The legs are pretty tarnished).

I even brought tout the headgear magnifiers to check for burns/discolorations.

[BookWormStud]

Re: Panasonic VIERA TC-L32X5 - One LED blink

So your problem was on which board ?

[WannaTheater]

Re: Panasonic VIERA TC-L32X5 - One LED blink

Never figured it out. Discarded.

[BookWormStud]

Re: Panasonic VIERA TC-L32X5 - One LED blink

Never figured it out. Discarded.

Is there anyway to jump the wires and turn on the Backlights with Main/A-Board disconnected from P-Board?

[rustytierod]

Re: Panasonic VIERA TC-L32X5 - One LED blink

Will not turn on, I get a red status light, no blinks except one briefly if I press power again. No picture.