View previous topic :: View next topic |
Author |
Message |
Stumped Guest
|
Posted: Fri May 19, 2006 7:56 am Post subject: Sony KD34XBR960 Shuts off only when room warm "4 Blinks |
|
|
Replaced two DZ boards already. The TV is fine and will stay on for hours if room temp is below 77F. If warmer than 77, it will shut off in 30-45 minutes. Picture will go black before it powers down and it shows a bright white line from top to bottom in the center of the screen. It shows the [Vsync] code "4 Blinks" when it shuts down but diagnostics also shows[Hsycn] and [Low B+] error codes.
This has been driving us nuts. |
|
Back to top |
|
|
Guest
|
Posted: Fri May 19, 2006 11:00 am Post subject: |
|
|
My best hunch is it is an overcurrent situation on the B+ line. As the room heats up it causes the failed or shorted component to go out of spec and trip the protection circuit. |
|
Back to top |
|
|
Guest
|
Posted: Fri May 19, 2006 11:10 am Post subject: Re: Sony KD34XBR960 Shuts off only when room warm "4 Bl |
|
|
Stumped wrote: | It shows the [Vsync] code "4 Blinks" when it shuts down but diagnostics also shows[Hsycn] and [Low B+] error codes.
|
You have 3 error codes listed in the diagnostics it may be any of those that are causing the problem. The blinking led may be a symptom of one code that is caused by another. The TV will display the first code detected and it may not be the code that is causing the fault.
Look at the flyback circuit 5V line for shorted caps, diodes, or cracked solder joint. |
|
Back to top |
|
|
|
|
|
You can post new topics in this forum You can reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum
|
eServiceInfo on FB -
Service Manuals Free Download -
Service Diagrams
Free TV Schematics Download -
HARDW.net -
Pinout Master -
Jabse Service Manual Search -
Jabse.InK -
onTap.bg
SnimkiOt.com -
Poblizo.com : пътешествия
Latest Service Manuals :
DMM7510 Firmware v1.1.0f Keithley • phb9nq20t phd9nq20t php9nq20t 2 Philips • ss8550 Secos • MaxLine ІІ 250 GB maxtor • tip3055 Bourns • PT-LB10NTU ALL SVC panasonic • 04-lubrication system Honda • Adj Di181 020 Minolta • QS-6 Alesis • stv355 CHOV •
|