Re: Sony KDL-70R550A 5 Blinks

In both Tcons, with both LCD-tcon ribbons unplugged, the TV stays on. With the left cable plugged in, the tv stays on and displays vertical stripes. With the right cable plugged in, the original Tcon leaves the TV on with a black screen, the new Tcon causes the TV to shut off and blink 5 times.

Re: Sony KDL-70R550A 5 Blinks

I cant see a thing. There is absolutely no picture. The backlight comes on just fine

Re: Sony KDL-70R550A 5 Blinks

I dont really know how to do that without the picture. Manual says to plug in the USB and go to "settings." I cannot get to settings without being able to see

Hello all!

I am trying to fix my Sony 70R550A LED TV.

1: TV had no picture, and no sound, but backlight came on and status light stayed green.

2: If I removed the Tcon from the TV, the symptoms didnt change.

3: If I unplugged only the left ribbon from the Tcon to the LCD, the display
would show vertical lines where the logos would be (see pictures).

4: I ordered a new T-con from Sony Parts. My Tcon is a RUNTK-5348TP-ZA and they sent me a RUNTK-5345TP-ZA, which according to google is for a Vizio M601D. The shipping label...

Re: Sony KDL-70R550A No Picture, No Sound, Backlight ON, Green status light

Here you go. The red arrow is where I tested 12.4v.

Anywhere else is covered by the metal heatsink/bracket. Is it safe to turn the unit on with the heatsink off?...

Re: Sony KDL-70R550A No Picture, No Sound, Backlight ON, Green status light

With just the left ribbon in, I got the same blank screen. With the right ribbon in however, i got this:...

Re: Sony KDL-70R550A No Picture, No Sound, Backlight ON, Green status light

My appologies. Here you go.

If I unplug the backlight from the power supply, i get 6 red blinks. If I remove the TCon completely, status light stays green and functions exactly as it does with it in. I dont know if this helps any...

Sony KDL-70R550A

Turns on just fine with button or remote, backlight comes on, but no logo, no menus, no lines, no sound, just a blank black screen with the backlight. When you press remote buttons the status light blinks, so something is trying to work. No red lights at all.

Power Supply is providing the poper voltages to the mainboard. The pins are labelend on the power supply side so I checked them with the set ON. Tcon seems to be getting 12.4v from the mainboard. I checked the fuses I could find, and they seem okay, but there are plenty that are tiny so Im not sure...

Re: New Members - please post your introductions here

Hi. I'm Kyle and I have just joined. I repair electronics in my spare time.. I have found this forum to be extremely helpful. Thank you.