Intermittent F70 Error
F70 interrmintent problem caused by (Ic-current) interupted, supply for cpu, Q1702 (emitter point) high resistant to IC1701, suggestion- connect a wire between these component due to pcb track poor contact.
13 hours ago
first of all, congratulation for your website.
My panasonic 42" with TNPA5390 and TPA5330, was resume from 7 blink led after replacing these components:
POWER SUPPLY TNPA5390
After these change I got 6 LED blinking. After replace the
The TV was ON for a few hours now again 7 blinking LED.
This time, NO previous components are in fault.
I noticed that on SN2 connector I do not have Hight voltage and Q300, Q301, F102 are OK. I have checked also the 5V (C561) and 15V (on TP82) near the connector SN20 and I read both.
What you suggest ? Thanks and regards
You have already gone way beyond what most people would try in order to get that item working. The next step is to get a FLIR camera and see what areas are getting hot and a magnification device to inspect all the SMT devices on the board.
Panasonic plasma turns from picture to snow to picture over and over
If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/
Faults & possible causes to LCD screen are given with illustrations. You can get an idea about the fault to an extent.
View the site by desktop or webview on mobile devices to see the "search box". Type in the brand name of your set in search box; to get gathered the related posts.
Screen-shots to defective LCD panels are given. You can see and compare to that to your TVs', and can make sure about the fault to an extent.
on May 18, 2020
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