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 !

Wednesday, 20 March 2019

SONY KV-36XBR450 - LED BLINKING CODES - SELF DIAGNOSTIC FUNCTION

SONY KV-36XBR450 - LED BLINKING CODES - SELF DIAGNOSTIC FUNCTION


APPLICABLE TO - SONY KV-32HS20/36HS20/36HS20H/32XBR450/36XBR450/36XBR450H
SELF DIAGNOSIS
If an error occurs, the STANDBY/STEREO LED will automatically begin to flash. The number of times the LED flashes translates to a probable source of the problem. A definition of the STANDBY/STEREO LED flash indicators is listed in the  instruction manual for the user’s knowledge and reference. If an error symptom cannot be reproduced, the Remote Commander can be used to review the failure occurrence data stored in memory to reveal past problems and how often these problems occur.
TEST INDICATORS
  • When an error occurs, the STANDBY/STEREO LED will flash a set number of times to indicate the possible cause of the problem. If there is more than one error, the LED will identify the first of the problem areas.
  • Results for all of the following diagnostic items are displayed on screen. If the screen displays a “0”, and error has occurred.
DISPLAY OF STANDBY LIGHT FLASH COUNT
Stopping the Standby/Timer LED Flash
  • Turn off the power switch on the TV main unit or unplug the power cord from the outlet to stop the STANDBY/TIMER LAMP from flashing. Self-Diagnostic Screen Display.
  • For errors with symptoms such as “power sometimes shuts off” or “screen sometimes goes out” that cannot be confirmed, it is possible to bring up past occurrences of failure on the screen for confirmation.
TO BRING UP SCREEN TEST
  • In standby mode, press buttons on the Remote Commander sequentially,  in rapid succession: DISPLAY à  Channel 5 à Sound volume (-) à  Power ON.
  • Since the diagnostic results displayed on the screen are not automatically cleared, always check the self-diagnostic screen during repairs. When you have completed the repairs, clear the result display to “0”.
  • Unless the result display is cleared to “0”, the self-diagnostic function will not be able to detect subsequent faults after completion of the repairs.
CLEARING THE SELF DIAGNOSTIC DISPLAY & QUITTING.
  • To clear the result display to “0”, press buttons on the Remote Commander sequentially when the diagnostic screen is displayed:  Channel 8 à ENTER.
  • To quit the entire self-diagnostic screen, turn off the power switch on the Remote Commander or the main unit.
SELF DIAGNOSTIC CIRCUIT
  • +B over current (OCP) Occurs when an over current (more than 6A) on the +B (135V) line is detected by R6598/R6591. It will cause Q6520 to turn on and force the AC relay to turn off through Q6532 and Q6530.
  • +B over voltage (OVP) Occurs when 1) over voltage (more than +140V) on the +B (135V) line is detected by IC6505, or 2) an over voltage (more than 7.5 V) on the unreg 7V line is detected by D6014.  The AC relay will turn off through Q6532 and Q6530.
  • Vertical Deflection Stopped:  Occurs when an absence of the vertical deflection pulse is detected by IC201. Power supply will shut down when waveform interval exceeds 2 seconds.
  • White Balance Failure:  If the RGB levels do not balance within 2 seconds after the power is turned on, this error will be detected by IC201. TV will stay on, but there will be no picture
  • Low B Error:  Occurs when set 5V is out.
  • Horizontal Deflection Stopped:  Occurs when either: 1) a +B over current is detected (IC5007), or 2) overheating is detected (Thermistor TH5002).
Posted By: FRANK at 02:57
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