View previous topic :: View next topic |
Author |
Message |
Toon
Joined: 20 Sep 2006 Posts: 7
|
Posted: Wed Sep 20, 2006 12:33 am Post subject: sony KV-29K5U |
|
|
Can anyone help me - my Sony KV-29K5U Television has just stopped no picture and no sound, the red LED just keeps flashes twice with a pause. |
|
Back to top |
|
|
gary
Joined: 05 Apr 2005 Posts: 584 Location: MANCHESTER, uk
|
Posted: Wed Sep 20, 2006 5:53 pm Post subject: |
|
|
CHECK Q533 FOR S/C, REPLACE ONLY WITH IDENTICAL, DO NOT USE EQUIVALENT IT WON'T LAST, CHECK FOR DRY JOINTS ON LINE DRIVE TX AND IN BASE CIRCUIT OF Q533, IF FAULT PERSISTS REPLACE LINE OUTPUT TRANSFORMER. |
|
Back to top |
|
|
Toon
Joined: 20 Sep 2006 Posts: 7
|
Posted: Wed Sep 20, 2006 11:46 pm Post subject: |
|
|
Gary can you be a bit more explicit "Q533 FOR S/C" I'm a bit green when it comes to TV's also where do you get the schematic drawings from?
Thanx |
|
Back to top |
|
|
gary
Joined: 05 Apr 2005 Posts: 584 Location: MANCHESTER, uk
|
Posted: Thu Sep 21, 2006 12:22 am Post subject: |
|
|
q533 is a transistor mounted on a heatsink at the back of the set, remove it from the circuit board and measure its resistance between the middle pin and the 2 outer ones, if there is little or no resistance then the transistor is short circuit (s/c), schematic is available on this site , search for kv25k5 it is the same chassis. |
|
Back to top |
|
|
Toon
Joined: 20 Sep 2006 Posts: 7
|
Posted: Thu Sep 21, 2006 1:40 am Post subject: Toon |
|
|
Thanks Gary i'll have a go. |
|
Back to top |
|
|
Toon
Joined: 20 Sep 2006 Posts: 7
|
Posted: Sat Sep 23, 2006 2:16 am Post subject: |
|
|
Gary I've taken the transistor of and tested it - it is shorted across all pins, do you know where I could get a replacement.
Thanx again |
|
Back to top |
|
|
gary
Joined: 05 Apr 2005 Posts: 584 Location: MANCHESTER, uk
|
Posted: Mon Sep 25, 2006 3:59 pm Post subject: |
|
|
try semenedis 08708508501 or cpc 08701202530 |
|
Back to top |
|
|
Toon
Joined: 20 Sep 2006 Posts: 7
|
Posted: Wed Sep 27, 2006 12:16 am Post subject: |
|
|
Gary I have changed the Transistor and now I have sound but no picture, the red LED flashes 4 times.
Any suggestion what to do next?
Thanks. |
|
Back to top |
|
|
gary
Joined: 05 Apr 2005 Posts: 584 Location: MANCHESTER, uk
|
Posted: Wed Sep 27, 2006 4:13 pm Post subject: |
|
|
4 flashes is no vertical sync, check ic501 and related parts, it may also be worth resoldering the rivets on the scan coil windings as they can cause problems |
|
Back to top |
|
|
Guest
|
Posted: Thu Sep 28, 2006 3:18 am Post subject: |
|
|
Gary I have checked around IC501 and it seams ok. Can you tell me where the Scan coil windings are so that I can re-solder the rivets?
Thanks |
|
Back to top |
|
|
|
|