Question about Sony FD Trinitron WEGA KV-34HS420 34" TV
6 times blinks shows problem can be in following areas.
• +5 line is overloaded. (AY, BY, MY
• +5 line is shorted. (AY, BY, MY Boards.)
• IC504 is faulty. (AY Board)
If you are tech-person, then understand easily.
Posted on Sep 07, 2008
A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
SOURCE: Sony blinking standby light
This is Sony's way of telling you that there is a short in you set.Probably the horizontal deflection circuit.(Horizontal output transistor shorted??). Also any other short. You need to take it to a techincian and have it checked out. It would be wise to get an estimate! Stargazer
Posted on Feb 12, 2007
Doorman45, common failure for your model, replace both IC`s with the following number stamped on the top of the IC,
MCZ3001D, the new & improved version ends in DB but I have installed the originals several times with no call backs, good luck
Posted on Nov 27, 2007
Sorry for how long it is but you should be able to find what is wrong in this guide
If you have any questions please dont hesitate to ask
ONE Blink--- not used for the self-diagnosis
TWO Blinks---B+ over current protection (OCP) , unit goes to the standby
mode then displays the 2 blink fault. Could be a short in the power supply of
any of the circuits.
THREE Blinks---B+ over voltage protection (OVP), unit goes to the standby
mode then displays the 3 blink fault. This is also a problem in the power
supply circuit, check T603 and R672.
FOUR Blinks---No Vert. Deflection (V STOP), Screen goes to a single
horizontal line then the video signal muted. Check IC1509, Q1505
FIVE Blinks---AKB circuit (AKB), the timer/standby indicator blinks for about
30 seconds then goes to the self-diagnosis function. Something is wrong with
the video. Check video out, Q705, 732, 761 and other components on the C
board, also check Q218, 219, 220 on the A board. Also unit be in IK blanking,
try turning up screen slightly.
SIX Blinks---No Horizontal (H STOP), no raster, goes to the blinking selfdiagnosis
function immediately. Check C515 & 516 and the jungle IC, IC206.
SEVEN Blinks---High voltage shutdown. The high voltage has exceeded 33k
and the unit goes immediately into safety shutdown. Check power supply
regulation and horizontal circuits.
EIGHT Blinks---Problem with the audio (AUDIO), unit goes to standby and
blinks the self-diagnosis code. Check IC406 audio amp, PS401 and 402.
Intermittent problems ?? This is a great feature. You can also bring up
these fault codes ON-SCREEN to see a list of the problem numbers with the
abbreviation of the problem and the number of times this problem has
occurred. This is slightly different than entering the service mode. To see the
diagnostic screen, Press the following buttons:
Display, Channel, 5, Vol Minus, ( Not plus ) then Power. This brings up
a screen with a list of the problems and number of times they have occurred.
Each of the problem names is abbreviated as, "OCP", "OVP", "V STOP", ETC.
We have repeated them in parentheses in the text for the "Blinks" described
above so you can correlate between the diagnostic screen and the blink
So, now that you know about these self-diagnostics, how do you use them?
Say that you have a set with a black screen. You see that the LED is blinking
4 times....This would tell you that you have no vertical and that is why the
video is muted. If it was blinking 6 times, you would know that you have a
It's not a sure cure, but it's a little better than a poke in the eye with a sharp
IMPORTANT: after you repair the unit, PLEASE clear the values on this diagnostic screen. These codes do not reset themselves after the fault is 0 corrected, so if you don't clear them, you'll be seeing "old" fault codes the
next time you enter this screen. Clearing is done by going into the service mode ( display, channel, 5, volume plus, then power ) then press 8 and Enter, which of course returns
everything to the factory preset condition.
Posted on Dec 03, 2008
Tips for a great answer:
Nov 26, 2014 | Televison & Video
Sep 13, 2010 | Sony FD Trinitron WEGA KV-32FS120 32" TV
Dec 11, 2009 | Sony KP-46WT500 46" Rear Projection...
Oct 09, 2009 | Sony FD Trinitron WEGA KV-36FS120 36" TV
Aug 01, 2009 | Sony FD Trinitron WEGA KV-32FS120 32" TV
Oct 03, 2008 | Sony FD Trinitron WEGA KV-34HS420 34" TV
Jul 10, 2008 | Sony Grand WEGA KF50WE610 50" Rear...
Nov 27, 2007 | Sony FD Trinitron WEGA KV-34HS510 34" TV
165 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: