I have changed all the HV capacitors in the PS , that look bad but remain the same problem, In this forum said that is a very knowm problem , but I didn't have any assistance from Panasonic, because I have bought the plasma in USA and brougth it to Venezuela, so Panasonic Venezuela said that dotn't respond for Panasonic products bougth in USA. And the Plasma Concierge service from Panasonic USA didn't give me any answer. Please if you know which is the problem , tell me how to fix the problem Thanks
I ahve found a PDF in realtion to the "Blinking Light of Death",Panasonic has several problems. I have the same Plasma th42pz700u. the LED is blinking 7 times then repeats. The possible problem fron the PDF is this. Its in trouble mode SC floating voltage SOS. with defective boards. the boards are mostlikely one of the following depending on the flow chart. SC, SU,SD,or the P board.
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If you tested the high voltage diode and capacitor it would leave the magnetron as the last line of defence to test. "warning unplug microwave" unhook one side of the magnetron, set meter to ohms, good reading less than 1ohm, if no reading the magnetron is bad, but keep in mind the magnetron can still be bad if there is a shorted turn which the meter cannot detect.
After changing a defective capacitor, my TV still would not power up. After using a solution I found on this site, I held the power and volume up button down on the TV itself for several seconds, the TV powered up normally. I did notice that you had to do this while the timer light was flashing. Doing so after it went out was not effective. I initially only replaced one capacitor which was noticeably defective, and the flashing green timer light eventually returned. I will be replacing all 7 capacitors and resetting the TV. As mentioned above, the capacitors may look good but in fact may be defective. These are high temp caps which breakdown under a load but function normally when cold. Several people have mentioned replacing the capacitors didn't fix the problem. It appears that you must replace and reset using this method to repair some of these TVs.
Although the other response is in much better technical lingo, it sounds to me like the television had a high voltage arc which I have seen on quite a few of the sony big screens lately. Usually, it causes a part on the circuit board, (one of many that were listed on prev. solver's list) to fail. This causes a delimma for the repairman, because when they find the bad part and replace it, sometimes it will pop again causing repeat failure of boards and/or parts on the board. Sony is known for having bad tubes on their projection sets, and it can be a difficult repair even for a trained tech. I suggest calling a sony service center in your area, and get an accurate estimate before deciding if replacing the set is the best idea. Hope this is helpful input, Russmann.
Is the light blinking 7 times on front of TV ? If u take the back cover of the TV off you should see two leds on the bottom right of power supply turn on when u push the power button. When the TV go into error protection on the upper left of power supply you should see. A blinking green light. Please inform me of the error it flashes and ill will be able to help further. ( Serveral possiblilties it could be from audio, bad power,and faulty Y-main.)
read on a forum that changing out c316 1000uF will fix the problem, mine will not turn on now, seems to have gotten worse over time. I will change the capacitor from 1000uF 10v to 1000uF 16v. Look at your capacitor, mine looks like its ready to blow. Most other capacitors on the board are rated at 16 volts. I will be changing out the cap. to see if it works.
Changing all the caps is not the right approach
to problem solving.Works cold,but fails after hot
is a thermal issue.After set warms up and fails,use cool freeze spray on suspect components to isolate.Determine whether CRT filaments are lit
and/or if HV is present.Also,inspect jumper wire
from transformer to HV block-if corroded,replace
jumper HV lead & HV block w/Mits. parts.