Question about Sony KV-36XBR450 36" TV

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Sony 36XBR450 Tv will not turn on. The LED blinks from 7, 6 and now 5 times. A technician told me it might be the HV transformer.Before I order, is there anyone with a similar problem that was resolved?

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Re: Sony 36XBR450

Double check, the horizontal output transistor for shorts. Also resolder the horizontal driver transformer on the primary as well as the secondary sides. Good Luck

Posted on Dec 11, 2006

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Re: Sony 36XBR450 - Sony KV-36XBR450 36" TV Standard (CRT) Televisions

Ditto bad flyback

Posted on Dec 09, 2006

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1 Answer

Sony kv-36xbr450 36

breakdown in the horizontal, check the c515, c516 and the jungle ic IC206 which get bad.

Oct 27, 2012 | Sony KV-36XBR450 36" TV

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Sony triniton model kb-36xbr450 keeps turning off by itself

There is some short circuit with the main board of this TV. Contact any experienced service technician to get it repaired. It is a skilled work, that a user can't do.

Aug 10, 2012 | Sony KV-36XBR450 36" TV

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Sony KD-34XBR960....problem is that screen is black; LED light blinks 7 times in a row pauses and then starts blinking again. Have powered off and no improvement.

This tv have two power ICS left side of the FBT-The Flyback Transformer.The big black block of plastic with a red wire with a cap hook to a CRT(tv tube).Replaced those 2 power ICS,tv will solved this LED power light flashing,tv will have stable power again,tv will work.

Oct 23, 2010 | Sony FD Trinitron KD-34XBR960 34" TV

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Have sound but no picture. Turned TV off last night and when I turned the TV on this morning there was good sound on all channels, but there is no picture. Just a black screen

is hv circuit problem a power transistor to 25KV transformer maybe dead, check the HV Circuit, or 1XXV output from Mains transformer the fuse maybe dead

Mar 11, 2010 | Sony KV-36XBR450 36" TV

1 Answer

My tv will come on with no picture but with sound. stay on for a few seconds then turns off and the stand by light flashes 7 times

If no HV, ic8002 is bad part# MCZ3001DB beside flyback transformer. I usually replace IC6501(regulator driver) and IC8002 at the same time, they both have the same part number. If you are not a technician think twice first before replacing because you need a very good soldering skills.

Dec 28, 2009 | Sony FD Trinitron WEGA KV-34HS420 34" TV

1 Answer

Red LED light blinks 7 times when the set is turned on; no pictur

if you have the circuit diagram of your tv,check the horizontal polarisation IC closer to the line transformer and replace it.If it doesn't work,send the question again.

Sep 22, 2009 | Sony FD Trinitron WEGA KV-34HS420 34" TV

1 Answer

Standby/Timer LED blinking

These unit are famous for the PCB Print to be cracked around the HV Circuit and or the Horizontal Drive Transformer pins needing to be resoldered. It can turn into a very Major repair if the HV Components short. In that case the Power Supply will also short out.
Hope this helps

Jul 04, 2009 | Sony KV-32S42 32" TV

1 Answer

Sony FD Trinitron WEGA KV-34HS420 34" TV blinks 7 times

Yes this is normally an indication that the HV has exceeded 33,000V. The first thing to check is the rgulator circuit. If you plan on attempting this repair yourself, please udate this and I'll look up the specifics.

If you need the service manual, perform a Google search. There are a number of sites that have the manual available for sale. I am not aware of any free site that would have it. THe cost should be around $10-$15.


Feb 26, 2009 | Sony FD Trinitron WEGA KV-34HS420 34" TV

1 Answer

KV-36XBR450, FD Trinitron WEGA

Hello maymet,

This sounds like the HV protection circuit is cutting off the TV due to a high current event in the set. This could be a problem in the High Voltage section of your TV (Horizontal output transistor, Integrated High Voltage Transformer, and y of the deflection components, and or the CRT in cases of shorts).

I would suggest that if you do not have a background in electronics, you should have an experienced TV technician troubleshoot and repair this problem.
This is due to the nature of the dangerous voltages that are present in the television.

I hope this helps,

Thank you,


Nov 02, 2008 | Sony FD Trinitron WEGA KV-36FS120 36" TV

1 Answer

HV Sound no Picture

Sounds as though there is an intermitant, heat-related problem with the HV transformer. You can order this at a tv parts shop or from Sony (probably more expensive) the part number should be on the part or on a schematic. If not, the parts dealer can look it up from the model number.

Good luck! :)

Dec 27, 2007 | Sony KV-36XBR400 36" TV

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