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 !

Saturday, 16 February 2019

SONY-SXRD KDS-50XBR-1 KDS-60XBR-1 LED BLINKING CODES FAULT LOCATION

SONY-SXRD KDS-50XBR-1 KDS-60XBR-1 LED BLINKING CODES FAULT LOCATION





                                             LAMP ERROR [Continuous lamp Red LED Flash] 
  • A current sensor circuit mounted on the Lamp Driver Module monitors the current drawn by  the lamp.  As the lamp ages the current it draws gradually decreases, and once it falls below a pre-determined threshold or stops completely the protection circuit detects a defectice lamp.  The TV will shut down and the Lamp LED flashes continiously.
TEMPERATURE ERROR [2X Red Power/Standby flash pattern]
  • The temperature error protection circuit monitors three areas for an excessive temperature condition.
  • The S-1 Board [LM75 Temperature Detect IC] monitors the local external  ambient room temperature.  The DE microprocessor regularly queries IC7100 on the S-1 board over the I2C bus for temperature information.  The threshold is set to approximately 45 degrees Celsius.  The S-1 board is located on the lower rear right corner of the unit on the QSU-board shield when looking  at the unit from the rear.
  • The S-2 board [LM75 temperature detect IC] monitors the temperature near the Lamp.  The DE microprocessor regularly queries IC7120 on the S-1 board over the I2C bus for temperature information.  The threshold is set to approximately 65 degree Celsius, and is located on the lower left front corner of the unit on the front of the Lamp Housing when looking at the unit from the rear.
  • There is also a LM-75 mount on the C board, which monitors internal TV temperature.  The DE microprocessor regularly queries IC6901 on the C board over I2C bus for temperature information.  The threshold is set to approximately 90 degrees Celsius, and is located on the C-board atop the optical block.  The C-board and optical block come from parts as an assembly.  
  • When any one of the area describe goes above the indicated temperature threshold the TV will shut down and a 2X flash Patterson on the standby/power LED will occur.

LAMP COVER ERROR [3x Power/Standby Red LED Flash Pattern]
The DE mocro processor monitors the lamp cover for proper closure.  On the back of the lamp cover there is a tab, which depresses and closes a switch on the T-1 board when the cover is securely closed.
If the cover is not securely closed or if the tab, switch, of wing is damaged, then the TV will shut down and a 3X flash pattern on Standby/Power LED will occur.
The DE micro processor also  monitors the Lamp Plug connection using the T3 board, located inside the lamp housing near the female side of the plug.
If the plug does not mate up properly, of if the plug, switch or wiring is damaged  then the TV will shut down and a 3X Flash pattern on the Standby/Power LED will occur.
FAN STOPPED {4X Power/Standby Red LED flash pattern}
All cooling and exhaust fans the TV are monitor for rotation.  If any one of the fan stops rotating for any reason, such as, and obstacle blocking the blades or a defective fan the DE micro processor will receive an error signal.  The TV will shut down and a 4X flash pattern on the Standby/Power LED will occur.
LAMP DRIVER ERROR {5X Power/Standby Red LED Flash}
This protection circuit monitors the output of the lamp driver (aka Lamp Power Supply Block of Lamp Ballast) module for the presence of High Voltage Drive (AC12KV) for Lamp Ignition and normal operating voltage (AC60V) after initial lam ignition.
Note:  The Lamp Ignition High Voltage can vary between 5KV and 26KV, 12KV is the typical ignition voltage, depends on the temperature of the lamp at the time of ignition.
This protection circuit also indirectly monitors the 380V from the main power supply.  If the 380V supply is missing the Lamp Driver will not be able to develop the high voltage, and therefore, the DE microprocessor will detect a lamp driver failure.
When either the high voltage output fails {lamp Drive Defective} the TV will shut down, or the 180V supply fails {Main power Supply defective} the TV will shut down and a 5X flash pattern on the Standby/Power LED will occur.
LOW B ERROR { 6X Power/Standby Red LED Flash Pattern}
The DE micro processor directly monitors the DC voltage output of the D5V regulator IC2103 on the ASU board, and indirectly the SUB11V voltage output from the main power supply.  The SUB11V is the input voltage of the D5V regulator IC2103.  Therefore if either the D5V regulator, Main Power Supply, or the SUB11V voltage path to the D5V regulator fails the TV will shut down and a 6X flash pattern on Standby/Power LED will occur
AUDIO ERROR {7X Power/Standby Red LED Flash Pattern}
The protection circuit  (IC2605, IC2606 & IC2608) mounted on the 'K' board monitors the audio amplifier outputs [Speaker lines] for a shorted condition or for the presence of any DC voltage level.  If either of these conditions is detected the protection alerts the 'DE' micro processor of the failure and a 7X flash pattern on Standby/Power LED will occur.
PANEL ERROR OR DEVICE ACKNOWLEDGMENT ERROR [ 9X Power/Standby Red LED Flash Pattern]
This 'DE' micro processor monitors the I2C communications between itself and the C-Board, S1-Board & S-2 Bard.  This protection circuit will trigger if the previously mentioned devices do not send an acknowledgment (over the I2C Bus) during initial TV power-up, or if the I2C bus communications between these devices is interrupted during normal operation.  In either case, the 'DE' micro processor detects the failure, the TV will shut down, and the Red Power/Standby LED flashes a 9X flash pattern
Posted By: FRANK at 07:35
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