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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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Sony KP-61XBR200 convergence ideas?
HI all,
I recently worked on a customers 61" Sony KP-61xbr200 and although I made great progress I was hoping someone has seen this problem before I spent countless hours on this thing Intial Symptom : Dead Set with high voltage arcing. Repair - Found Flyback arcing so replaced Flyback. Symptom - Unit would then click, give high voltage and then shut down. Unit blinked 8 times on the led meaning audio problem. Repair - Found shorted TDA7265 on audio board and replaced Unit now turns on and has video and sound, but convergence is horrible. Press auto convergence on the front of the TV and gives E12B error with no effect on convergence. I do not have a service manual for this unit so I am unfortunatly note able to use this info to isolate a problem. Entered Service mode and tried to adjust convergence with no effect. If anyone has a service manual and can give an explanation of this E12B error that would great or even better if they have incountered this problem and have a general area to look at that would be of great help. I encounter few projection sets and unfortunalty have little experience with them. This unit is also much newer then the units I typically get called out for. Please no general answers. I am looing for a person that is familiar with this set and symptom. Thanks for any and all help. Fred |
#2
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Sony KP-61XBR200 convergence ideas?
Digital convergence is missing the hsync or vsync pulse, probably a related
failure to the flyback. Strongly suggest you buy the service manual as there are likely other failures and things you will need to do when finished. Do not foget Sony sells the adjustment manual separate from the service manual which contains the schematics. juice28 wrote in message news:nEu6b.377318$Ho3.57264@sccrnsc03... HI all, I recently worked on a customers 61" Sony KP-61xbr200 and although I made great progress I was hoping someone has seen this problem before I spent countless hours on this thing Intial Symptom : Dead Set with high voltage arcing. Repair - Found Flyback arcing so replaced Flyback. Symptom - Unit would then click, give high voltage and then shut down. Unit blinked 8 times on the led meaning audio problem. Repair - Found shorted TDA7265 on audio board and replaced Unit now turns on and has video and sound, but convergence is horrible. Press auto convergence on the front of the TV and gives E12B error with no effect on convergence. I do not have a service manual for this unit so I am unfortunatly note able to use this info to isolate a problem. Entered Service mode and tried to adjust convergence with no effect. If anyone has a service manual and can give an explanation of this E12B error that would great or even better if they have incountered this problem and have a general area to look at that would be of great help. I encounter few projection sets and unfortunalty have little experience with them. This unit is also much newer then the units I typically get called out for. Please no general answers. I am looing for a person that is familiar with this set and symptom. Thanks for any and all help. Fred |
#3
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Sony KP-61XBR200 convergence ideas?
Dave,
I got ahold of a schematic and I see no Hsync or Vsync going to the digital convergence (The schematic calls it digital registration). I do see Hblank and Vblank is this what you meant? This is a very complex TV from what I am used to (I'll take the direct view any day any more specifics would greatly help. It will take me a couple days just to digest whats going on in this schematic. Thanks, Fred "David" wrote in message ... Digital convergence is missing the hsync or vsync pulse, probably a related failure to the flyback. Strongly suggest you buy the service manual as there are likely other failures and things you will need to do when finished. Do not foget Sony sells the adjustment manual separate from the service manual which contains the schematics. juice28 wrote in message news:nEu6b.377318$Ho3.57264@sccrnsc03... HI all, I recently worked on a customers 61" Sony KP-61xbr200 and although I made great progress I was hoping someone has seen this problem before I spent countless hours on this thing Intial Symptom : Dead Set with high voltage arcing. Repair - Found Flyback arcing so replaced Flyback. Symptom - Unit would then click, give high voltage and then shut down. Unit blinked 8 times on the led meaning audio problem. Repair - Found shorted TDA7265 on audio board and replaced Unit now turns on and has video and sound, but convergence is horrible. Press auto convergence on the front of the TV and gives E12B error with no effect on convergence. I do not have a service manual for this unit so I am unfortunatly note able to use this info to isolate a problem. Entered Service mode and tried to adjust convergence with no effect. If anyone has a service manual and can give an explanation of this E12B error that would great or even better if they have incountered this problem and have a general area to look at that would be of great help. I encounter few projection sets and unfortunalty have little experience with them. This unit is also much newer then the units I typically get called out for. Please no general answers. I am looing for a person that is familiar with this set and symptom. Thanks for any and all help. Fred |
#4
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Sony KP-61XBR200 convergence ideas?
Yes, those are the same thing.
juice28 wrote in message news:51A6b.381664$uu5.71819@sccrnsc04... Dave, I got ahold of a schematic and I see no Hsync or Vsync going to the digital convergence (The schematic calls it digital registration). I do see Hblank and Vblank is this what you meant? This is a very complex TV from what I am used to (I'll take the direct view any day any more specifics would greatly help. It will take me a couple days just to digest whats going on in this schematic. Thanks, Fred "David" wrote in message ... Digital convergence is missing the hsync or vsync pulse, probably a related failure to the flyback. Strongly suggest you buy the service manual as there are likely other failures and things you will need to do when finished. Do not foget Sony sells the adjustment manual separate from the service manual which contains the schematics. juice28 wrote in message news:nEu6b.377318$Ho3.57264@sccrnsc03... HI all, I recently worked on a customers 61" Sony KP-61xbr200 and although I made great progress I was hoping someone has seen this problem before I spent countless hours on this thing Intial Symptom : Dead Set with high voltage arcing. Repair - Found Flyback arcing so replaced Flyback. Symptom - Unit would then click, give high voltage and then shut down. Unit blinked 8 times on the led meaning audio problem. Repair - Found shorted TDA7265 on audio board and replaced Unit now turns on and has video and sound, but convergence is horrible. Press auto convergence on the front of the TV and gives E12B error with no effect on convergence. I do not have a service manual for this unit so I am unfortunatly note able to use this info to isolate a problem. Entered Service mode and tried to adjust convergence with no effect. If anyone has a service manual and can give an explanation of this E12B error that would great or even better if they have incountered this problem and have a general area to look at that would be of great help. I encounter few projection sets and unfortunalty have little experience with them. This unit is also much newer then the units I typically get called out for. Please no general answers. I am looing for a person that is familiar with this set and symptom. Thanks for any and all help. Fred |
#5
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Sony KP-61XBR200 convergence ideas?
After taking the Digital Convergence (DB board) board out of the set and
trying it. The symptoms were exactly the same. Tested all the voltages to the BD board and found R +5 missing? This is pin 2 on CN523 of the A board. I have to follow the yellow brick road around the schematic and see what the problem with this is Fred "David" wrote in message ... Yes, those are the same thing. juice28 wrote in message news:51A6b.381664$uu5.71819@sccrnsc04... Dave, I got ahold of a schematic and I see no Hsync or Vsync going to the digital convergence (The schematic calls it digital registration). I do see Hblank and Vblank is this what you meant? This is a very complex TV from what I am used to (I'll take the direct view any day any more specifics would greatly help. It will take me a couple days just to digest whats going on in this schematic. Thanks, Fred "David" wrote in message ... Digital convergence is missing the hsync or vsync pulse, probably a related failure to the flyback. Strongly suggest you buy the service manual as there are likely other failures and things you will need to do when finished. Do not foget Sony sells the adjustment manual separate from the service manual which contains the schematics. juice28 wrote in message news:nEu6b.377318$Ho3.57264@sccrnsc03... HI all, I recently worked on a customers 61" Sony KP-61xbr200 and although I made great progress I was hoping someone has seen this problem before I spent countless hours on this thing Intial Symptom : Dead Set with high voltage arcing. Repair - Found Flyback arcing so replaced Flyback. Symptom - Unit would then click, give high voltage and then shut down. Unit blinked 8 times on the led meaning audio problem. Repair - Found shorted TDA7265 on audio board and replaced Unit now turns on and has video and sound, but convergence is horrible. Press auto convergence on the front of the TV and gives E12B error with no effect on convergence. I do not have a service manual for this unit so I am unfortunatly note able to use this info to isolate a problem. Entered Service mode and tried to adjust convergence with no effect. If anyone has a service manual and can give an explanation of this E12B error that would great or even better if they have incountered this problem and have a general area to look at that would be of great help. I encounter few projection sets and unfortunalty have little experience with them. This unit is also much newer then the units I typically get called out for. Please no general answers. I am looing for a person that is familiar with this set and symptom. Thanks for any and all help. Fred |
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