REPAIRING AND NOT THROWING AWAY

REPAIRING AND NOT THROWING AWAY

Richtige Fernseher haben Röhren!

Richtige Fernseher haben Röhren!

In Brief: On this site you will find pictures and technical information about Service Modes, Circuit Diagrams, Firmware Update procedure, Disassemble procedure, Universal remote control set-up codes, Troubleshooting and more....

If you go into the profession, you will obtain or have access to a variety of tech tips databases HERE IT IS Master Electronics Repair !.

These are an excellent investment where the saying: 'time-is-money' rules. However, to learn, you need to develop a general troubleshooting approach - a logical, methodical, method of narrowing down the problem. A tech tip database might suggest: 'Replace C536' for a particular symptom. This is good advice for a specific problem on one model. However, what you really want to understand is why C536 was the cause and how to pinpoint the culprit in general even if you don't have a service manual or schematic and your tech tip database doesn't have an entry for your sick TV or VCR.

While schematics are nice, you won't always have them or be able to justify the purchase for a one-of repair. Therefore, in many cases, some reverse engineering will be necessary. The time will be well spent since even if you don't see another instance of the same model in your entire lifetime, you will have learned something in the process that can be applied to other equipment problems.
As always, when you get stuck, checking out a tech-tips database may quickly identify your problem and solution.In that case, you can greatly simplify your troubleshooting or at least confirm a diagnosis before ordering parts.

Happy repairing!
Today, the West is headed for the abyss. For the ultimate fate of our disposable society is for that society itself to be disposed of. And this will happen sooner, rather than later.

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..............The bitterness of poor quality is remembered long after the sweetness of todays funny gadgets low price has faded from memory........ . . . . . .....
Don't forget the past, the end of the world is upon us! Pretty soon it will all turn to dust!

©2010, 2011, 2012, 2013, 2014 Frank Sharp - You do not have permission to copy photos and words from this blog, and any content may be never used it for auctions or commercial purposes, however feel free to post anything you see here with a courtesy link back, btw a link to the original post here , is mandatory.
All posts are presented here for informative, historical and educative purposes as applicable within fair use. NOTHING HERE IS FOR SALE !

Tuesday 19 February 2019

PANASONIC TH42PX500U TH50PX500U SELF CHECK FUNCTION - DETAILS

PANASONIC TH42PX500U TH50PX500U SELF CHECK FUNCTION - DETAILS

DIAGNOSTIC PROCEDURES
Self check is used to automatically check the status of ICs that are controlled via the IIC Bus line.  Under normal condition, the status is OK.  A status indication other than OK indicates a problem within a specific board.
TO ACCESS SELF-CHECK SCREEN [RESET]
To get into self check mode, Press and Hold the "Volume Dn" button on the front of the TV, and "Sleep" button on the remote control.  Hold the Down at least three seconds.  The unit automatically tunes to channel '3'.  The word 'SELF-CHECK' appears at the corner of the screen, and a graphic OSD as below appears.
========================================================
SELF CHECK                                                   TZ1.    12000 - 12000
UV  OK                                          DT1  OK                        DT2  OK
SND  OK                                AVSWV  OK                  AVSWA  OK
ADV  OK                                  GC3FS  OK                      GC4P  OK
HDMI  OK                                 MEM  OK                        RTC  OK
PANEL  OK
=======================================================
To "EXIT" the self-check mode, press 'Power' button in front of the TV fro approximately '3' seconds.  The unit Powers Down and then Powers back in a few seconds.
NB:  All customer settings, including cable card activation data will be erased.  If customer uses cable card, reactivation will be required after reset.
SELF-CHECK EXPLANATION


DISPLAY
REF. NUMBER
DESCRIPTION
BOARD
UV
TU8200
TV TUNER
DT-BOARD
DT1
IC8211
FRONT PROCESSOR
DT-BOARD
DT2
IC8240
HDMSL PEAKS-LITE
DT-BOARD
H13UV2
--
--
--
SND
IC2608
BBE Viva
H-BOARD
AVSWV
IC2602
VIDEO SW
H-BOARD
AVSWA
IC2605
AUDIO SW
H-BOARD
ADV
IC4018
10 Bits A/D
DG BOARD
GC3FS
IC4019
GC3FS
DG-BOARD
GC4P
IC4026
GC4PRO
DG-BOARD
HDMI
IC5003
NDMI I/F RECEIVER
DV BOARD
MEM
IC4008
EEPROM
DG-BOARD
RTC
1C9007
Ex. I/O
D-BOARD
Posted By: FRANK at 06:22
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