TCP60ST50 7 blibking red lights

[JSJohn]

Re: TCP60ST50 7 blibking red lights

Thank you for all of your help. I sent the SC board in and just received the replacement. I'm about to install the new board but will conduct the SC50 test first. Hope all goes well.

[JSJohn]

Re: TCP60ST50 7 blibking red lights

I just did the SC50 test. Ground screws removed. SC20 and SC2 plugged in. Jumped SC50. I heard the TV buzz then 3 fast blinks. I assume I should start troubleshooting 3 fast blinks now.

[vinceroger69]

Re: TCP60ST50 7 blibking red lights

3 blinks A Board fault i think.

[JSJohn]

Re: TCP60ST50 7 blibking red lights

Thank you for your reply. Missing 15v what does that exactly mean? Could a shorted A board short out new SU, SD and SC. I started with 7 blinks so I've replaced the SC, SU and SD. Trying not to cause anymore problems.

[vinceroger69]

Re: TCP60ST50 7 blibking red lights

tw2005 is the best person to ask i guess as he seems to like pansonic plasmas

[JSJohn]

Re: TCP60ST50 7 blibking red lights

Thanks! I believe he's offline for another week.

[vinceroger69]

Re: TCP60ST50 7 blibking red lights

Thanks! I believe he's offline for another week.

i think he is, does your sc board still test good?
also have you re tested the buffer boards just in case ones failed.

[JSJohn]

Re: TCP60ST50 7 blibking red lights

I just received a replacement SC board. When I tested the old one, I was still receiving 7 blinks. With the new SC installed during SC50 test, for the first time, the tv comes on, solid red led, buzzes, then blinks fast 3 times. I am about to test the buffer boards again. However, they are new as well. TW was under the impression that a bad buffer could damage a good SC but a bad SC wouldn't damage good buffers.

[Moreno83]

Re: TCP60ST50 7 blibking red lights

Power off and remove the SC20/SC2 connector from the sc board.

Dont need to test the buffers yet.

Meter in diode/beep mode and measure for short on SC2. If it beeps the SC is bad. If it does not beep then it's probably ok.

I would recheck all cables. Especially on the mainboard. Maybe a pin is bent?

[Moreno83]

Re: TCP60ST50 7 blibking red lights

3 blinks can be mainboard or powersupply. I would not be suprised if a cable is badly seated or not connected at all.

[Moreno83]

Re: TCP60ST50 7 blibking red lights

Is it possible for you to take some clear pictures of the tv? ( The backside ).

[JSJohn]

Re: TCP60ST50 7 blibking red lights

I can take pics. Which boards? I'm going to try the these you suggested above. Thanks

[Moreno83]

Re: TCP60ST50 7 blibking red lights

Picture of the back side of the TV with all boards and a close up on the SC + A board.

[JSJohn]

Re: TCP60ST50 7 blibking red lights

Here ya go

[vinceroger69]

Re: TCP60ST50 7 blibking red lights

when you add pictures under where you type the message theres a button what says go advanced click on that then you will see a paper clip icon click on that then browse and upload your photos that way we can zoom in on them better etc thanks

[JSJohn]

Re: TCP60ST50 7 blibking red lights

Try this again. I have reconnected everything. I am now back to 7 blinking lights.

[vinceroger69]

Re: TCP60ST50 7 blibking red lights

have you restested the sc for shorts? as your now back to 7 blinks

[JSJohn]

Re: TCP60ST50 7 blibking red lights

I am starting the trouble shooting all over again starting on pg. 52 of tech guide.

[Moreno83]

Re: TCP60ST50 7 blibking red lights

Ok pictures are not clear , looks like they were taken by a old nokia Phone haha.

What did you do to get back to 7 blinks?

1) Is the connection between both buffer boards ok? ( Small ribbon cable ). It can cause 7 blinks if a tab has been lifted or badly seated ).

2) Did you remove the SC50 jumper when you connected the buffer boards?

3) Do you have a short on SC2 connector? ( powerconnector SC board ).

[JSJohn]

Re: TCP60ST50 7 blibking red lights

Its actually an iPhone 6S. However, the tv is in front of windows. I think there's just too much natural light. I have tested:

SU41 Pin 2 .542 k
SU41 Pin 6 3.1 ohms

SC42 Pin 2 3.0 ohms
SC42 Pin 6 .542 k

1) I will check the ribbon cable. I have removed it several times. It does have a slight crease that I noticed when I first began testing a few weeks ago.

2) Jumper has been removed.

3) I would I go about testing the SC2 connector. I believe TW said to back probe. However, I just have regular multi-meter needles.

Thank you for your help and patience.