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 KDS-50XBR1 KDS-60XBR1 SXRD TVSPROTECTION MODE BLINKING CODE TROUBLESHOOTING

SONY KDS-50XBR1 KDS-60XBR1 SXRD TVsProtection Mode Blinking Code Troubleshooting

LAMP COVER | PLUG ERROR [3X] {3 Blinks of Standby/Power LED}
          Two situations can cause the 3X flash pattern.
  • A problem with the lamp door positioning and closing of the door detector switch {T1-Board}.
  • A problem with the positioning of the Lamp & Lamp Power Plug and closing of the power plug detector switch {T3-Board}.
     The first step before replacing any parts is to check for proper positioning of the lamp door and power plug.  Furthermore, check for damage to the following items:
  • T1 & T3 boards Lamp Door switch & Lamp connector switch.
  • Check lamp door is securely seated 7 undamaged.
  • The door tab which depresses the detector switch.
  • The lamp door detector switch.
  • The lamp power plug.
  • The lamp plug detector switch.
     If the door, door switch, lamp or lamp switch are found damaged, then the appropriate component must be replaced. Replace, T1 or T3 board/s.
T1 Board > A-1123-096-A
T3 Board > A-1144-528-A
     If the door, door switch, lamp, or lamp switch are found undamaged and all connections are secure then there must be a problem with the 'DE' microprocessor and the ASU | DSU assembly must be replaced. 
ASU/DSU ASSEMBLY 50'  > A-1152-715-A
ASU/DSU ASSEMBLY 60'  > A-1152-714-A
FAN ERROR {4X}
     The main objective when this error occurs is to determine which of the four fans have stopped rotating.  Visually check the two rear exhaust fans first for rotation.  Both fans should begin rotating immediately after the TV power button is pressed.  Before replacing Fan-1 or Fan-4 for non rotating, check that the fans drive voltage is present  at CN2301/pins 2&11.  Because the the TV is shutting down, the voltages must be measured prior to shut down.
     The drive voltages should be 6V each.  If both drive voltages are present, replace the non-rotating fan.  If either of the drive voltage is missing then there is a defective drive circuit on the ASU-board.  Replace the ASU | DSU assembly.
     The other two fans, (Fans 2 & 3) are not visually accessible, and therefore have to use the DC fan drive and feed back voltages to check fan operation.
Check the fan drive voltages at CN2301/pins 6&8.  Check the fan feed back at CN2301/pins 5&7 on the ASU board.   Follow the appropriate path for drive or feed back  when troubleshooting. 
     The presence of fan drive voltage confirms that the drive circuits on the ASU-board are functioning properly, and confirms that the fan is receiving its operational voltage. 
     The level of the feed back voltage confirms that the fan is rotating.  The fan feed back voltage is (0.05V) when the fan is rotating.  If the fan is not rotating the feedback voltage will be greater than [1V].  Replace the appropriate fan if either feedback voltage is above [1V].
     If both the voltages are at the proper level then the fans are rotating, however the DE microprocessor is not processing the information accurately.  In this case, the problem is with the DE microprocessor.  Replace the ASU/DSU assembly
Posted By: FRANK at 07:29
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