How to Fix a Sony TV That Won’t Turn On

by Michael on October 24, 2009 · 215 comments

Back in 2003, we got a beast of a 36 inch Sony WEGA TV. It was a great TV for us over the years, but yesterday it refused to power up. The power supply would click like it was trying to power up, but it just wouldn’t come on.

We tried unplugging it to see if that would help, but it didn’t. Frustrated, I turned my attention to the internet. What I discovered surprised me…

For starters there are a number of people out there with similar Sony TV models that won’t turn on. It seems that the most common cause of this problem is a bad power supply (or some component thereof), and having it fixed professionally will likely cost $300-$500. That’s the bad news. The good news is that there is a (perhaps temporary) fix that you can do yourself in just a few minutes.

Fixing a Sony WEGA TV that won’t turn on

The power supply on this style of TV is located near the bottom of the unit in the back right corner (as you view the TV from the front). Beyond this, there is (apparently) a humidity sensor of some sort on the power supply that prevents the TV from coming on when there is too much ambient moisture.

Here’s the fix:

Start by unplugging your TV set. Next, simply direct a hair dryer (on high heat) through the vents along the lower, back corner of the right side of your TV set. Here again, “right side” assumes that you’re looking at the TV set from the front. Let it blow through the vents for a good 2-3 minutes then plug it back in and fire it up. If you’re lucky, it will function normally.

When I tried this yesterday, it didn’t work at first. After a bit more blowing, however, the TV powered up and continued to work for the remainder of the day. This morning, it turned on just fine, but then failed to turn back on a short while later. We then tried it after lunch and it worked fine again (all without firing up the hair dryer).

It’s unclear to me why this works. It may be that the humidity sensor is going bad and had become, or perhaps there’s a problem with dust somehow interfering. It seems unlikely to be the latter, as the heat appears to be necessary to get things back up and running.

Regardless, our TV is now functional if a bit unstable. I’m guessing that we’ll be able to limp along for awhile before it completely fails, but at least this buys us some time to shop for a replacement.

Oh, and just for reference, our Sony TV is model # KV-36HS500, and one of the key symptoms of this problem (aside from a failure to turn on) is that the power light will flash six times after hitting the power button.

{ 51 comments… read them below or add one }

mike November 8, 2009 at 11:08 am

Thanks for the tip on how to fix a Sony TV that won’t start. Follow the instructions exactly, and the TV fired right up.


Shell January 3, 2010 at 9:06 pm

Thanks so much for the info. After some blow drying time, Stevie the tv made a noise when hitting his power button, which was more than he had done in a week, but then nothing… until about 10 seconds later, when he powered on! You rock for sharing this fix.


filas February 10, 2010 at 5:57 pm

Thank you so much. it worked perfectly. calling the service guy now. do not need the repair man. Your an angel!


aaron March 4, 2010 at 2:38 am

umm its kinda like i built in falier arfter a while it just wont do enything


Peter Wedel March 6, 2010 at 12:23 am

I sure will try this. The service guy I called prtented he never heard of this problem..Thanks guys! Time for big screen anyway


Howard May 3, 2010 at 4:47 pm

Great idea. Gave it a try for my model 800. Tried an tried, but to no avail. Still makes a second noise, but won’t come on.

We were able to get it on a few times by just trying to turn it on when we came by. Once on, it worked fine. Decided to leave it on, in mute. Concept worked great until some dummo turned it off, out of normal practice. You’re right, it was me.

Back to square one (and a new HDTV) as soon as I figure out how to get rid of this (240 pounds). Any ideas?


Michael May 3, 2010 at 5:36 pm

Howard: Check for haulers. Search for “haul”, “hauler”, “hauling”, that sort of thing. That’s what we did. Got a couple of guys to carry it down stairs from our bonus room and out to their truck, and then haul it away for something like $50.


yes May 11, 2010 at 8:37 pm

it worked


Ronna Zobel May 30, 2010 at 6:16 pm

The blow dryer trick worked for us.


Kim June 9, 2010 at 4:19 pm

I tried the blow dryer and IT WORKED, thank you for the info. It has worked each of the three times I have tried it. I don’t know how long this will continue to work but I am hoping it will for a while. Do you know if the humidity sensor can be fixed??


jason July 9, 2010 at 2:41 am

i put a new bulb in today and then a few hours later my tv turned off and the front started blinking red 3 times and wont urn back on what does this mean anybody know?


Bruce September 16, 2014 at 9:22 am

Check your bulb door to make sure its closed all the way. There is a switch in the door and it wont turn on unless those contacts are touching.


John T Davis July 12, 2010 at 3:30 pm

Unbelievable! Worked like a charm! Just keeping our fingers crossed — anybody got an idea how long this might continue to work? Or how many times you can keep reviving it?


Kim July 14, 2010 at 3:03 pm

I was able to get my tv to turn on daily for about 1 week then I started having trouble. Some days it would work other days it wouldn’t. The blow drying time increased. Sometimes it took 10 minutes. I did find that if the tv was left unplugged for a couple of days and then used the blow dryer it would come on. I finally decided to keep the tv on, only turning off the satellite box, until I bought a new one. I just got a new tv. Wish I didn’t have to because I really liked the picture quality on the Sony but the blow drying thing got to be to much. I never knew if would work or not. If anyone finds out that the sensor can be fixed please let me know. I haven’t recycled the Sony yet.


Mark T July 20, 2010 at 8:16 pm

Unbelievable, after grumbling around the house about somebody breaking the tv the blow dryer worked. Took two tries, the second time on high hot. The high temp seemed the key. Thanks to my wife for looking this up!


David L October 3, 2010 at 12:33 am

Yes, I followed your instructions and it works. My TV fired up in 30 sec.


Nina October 17, 2010 at 9:23 pm

You are a GENIUS. My husband would marry you if he weren’t already married to me. 🙂
Go SF Giants!


john C November 19, 2010 at 6:25 pm

we’ve got a Sony Vega 32 inch LCD TV had it for about 3 years now and all of a sudden in the last couple of weeks it suddenly goes off whilst watching a programe, it doesnt make any noises just goes blank but we noticed that the on/off button on the front of the set flashes green on and off – any suggestions most welcomed and has anyone else had this problem with their Sony tv? many thanks John C


pizza December 17, 2010 at 9:39 pm

My sony wega still wont turn on D:


Michelle January 11, 2011 at 4:51 pm

Thanks so much for posting this! My Sony KDF-E50A10 wouldn’t turn on and I did exactly what you said and it’s back to working like new!
Thanks again!


EB January 19, 2011 at 6:40 pm

Worked for us too! Thanks!


Chuck January 28, 2011 at 12:41 am

hair dryer worked on the wega….props


Connie February 7, 2011 at 11:45 pm

I tried something different, I tried vacuuming the back of the TV think there was dust inside. I’ll try the blow drying too. I did find that by unplugging the TV to turn it on, then plugging it back it back in to turn it on. I’ve tried it twice, so far. Let’s hope I don’t forget and turn it on and off the old fashioned way. Keep your fingers crossed. I’ll report back if unplugging/plugging it in no longer works.


Dale February 17, 2011 at 7:35 pm

Jammer – Thanks – you are a genius. I have had TWO of these behemoths. The first died just like this a few years ago – never turned back on. I looked on the net, and didn’t see a fix, so I scapped the TV as the 300 – 500 wasn’t worth it. My neighbor was getting rid of one just like it, and so that one was the replacement until it died the same way, today. Cleaned it and used compressed air, and the unit came alive without the heat, but wirh squigly lines. Tried it with the heat of a blowdryer, and bam! Problem solved!! THANKS!!!


Walter February 25, 2011 at 10:14 pm

Awesome fix! I spent several hours last night unplugging and plugging in the TV, doing the power reset as directed by Sony. Finally worked. But tonight acted up again so I went researching for a new TV. The good news, my wife was forced to miss all the soaps today and I was forced to miss all the news tonight. We had a wonderful dinner for two with no interruptions! Then, as she tackled my kitchen mess I Googled this string and voila! It worked like a charm. Thanks. Saved me a service call and/or new TV.


Victoria March 7, 2011 at 9:02 am

Sounds like it worked for pretty much everyone. I will def try it this afternoon. Does this problem mean I have to look into getting a new TV for sure?


RUMEYSA March 25, 2011 at 1:59 pm

Wow! You are a TV genius. Because I am the one who found your site and was able to fix the TV, my husband now owes me a new car. THanks.


RAWJERZ March 30, 2011 at 6:02 pm

Unbelievable fix. Would I have tried it without the followup posts… probably not. But it worked, so I am here to add to the chorus of those who sing these praises. HoodaThunkIt???


Theresa April 16, 2011 at 9:56 pm

Our Sony WEGA 62″ just stopped playing a half an hour ago and when we try to start it back up…the lamp light just blinks and it won’t power on. What is this. All this time and now I can’t find the book so I’m here on the web trying to find answers….help.


Tommy April 17, 2011 at 6:50 am

This was great fix. Thanks. We bought our tv nearly a decade ago and it has been a great unit. we have another sony that is 30 or 40 years old that still works as well, although the picture is not the greatest anymore. I used a combination of two fixes, yours and plugging it into a wall socket. Works fine now and I will also just leave it on till I can convince my wife to get a new one. Thanks


Connie April 17, 2011 at 6:00 pm

I can’t believe it, using a blow dryer on my Sony FD Trinitron WEGA XBR
KV-40XBR800 actually worked! Now my blow dryer is plugged in and sitting next to my TV. I’d rather spend my money on something else.



Connie April 22, 2011 at 8:37 pm

The blow dryer was a short-lived solution. My Sony FD Trinitron WEGA XBRKV-40XBR800 turn on successfully for seven days just like it should. I came home tonight and the F’ing thing wouldn’t turn on! I tried the blow dryer again but it didn’t work.

I find it hard to believe that Sony isn’t aware of this problem.



Tommy April 23, 2011 at 1:41 pm

Connie, I agree. cant believe that this is happening to our tv and they didnt know about it. I have resorted to leaving our tv on all the time. It has been good for more than a week. I just dont want to have to purchase a new on right now. If you can get yours to turn back on, just leave it on.


atchang May 8, 2011 at 10:41 pm

blow dryer worked like a charm! thanks, jammer! youre a genius!


Connie May 8, 2011 at 11:14 pm

I agree Tommy, Sony has to be aware of the problem. I thought about leaving my TV on as well, however, since it’s not working properly I was concerned it could over heat. I tried the blow dyer too and it did work (a few times anyway). I have since unplugged the TV, disconnected the cable box, and moved the DVR upstairs to my SAMSUNG—which is also an HD TV. My very expensive Sony FD Trinitron WEGA XBRKV-40XBR800 now sits unplugged, in the living room and reminds me how I feel about Sony. I’m thinking that someone might want it for parts—eBay is only a keystroke away.


Joe May 11, 2011 at 10:37 am

Thanks for the tip. It worked like a charm.


Jon May 12, 2011 at 10:22 pm

I had been having this problem for more than a month. Sometimes it goes on after only a few presses. Sometimes a hundred. Sometimes not at all. Tonight it just wouldn’t go on. I found your post. I dried the back right on highlike you said and BINGO, it went on. I live in Florida. Humidity is part of life here. Let’s see how long we do the blowdry fix before we buy a LCD like everyone else.


Rebecca O'Rorke May 12, 2011 at 10:31 pm

Thanks so much! Your good advice saved us time and money.
It worked!!!!


MontyInNJ May 19, 2011 at 4:20 pm

Just tried this on an KV-36XBR800. 60 seconds on the bottom right side circuit board brought it back. Been raining for week this spring. Born on date 2/2002. Time for a bigger LED……….


Tommy May 21, 2011 at 6:34 am

Just dont turn it off. It may not come back on.


Jake May 26, 2011 at 8:38 pm

Wow, tried few times with blow dryer and it worked!! I guess Sony doesn’t make TV’s like good old days, which last me over 10 years until tube burned out…


char June 12, 2011 at 11:46 am

hair dryer trick worked for us too! was a bit skeptical. Had TV over 6 years hoping to keep it a few more. thanks for the awesome tip!


maranda June 20, 2011 at 5:41 pm

The hair dryer worked perfectly! I used the high heat setting and went a bit further than the instructions said. I blew out every vent for 2 min each. Remember to unplug the TV rather than turning it off. 🙂


Dennis O'Rorke June 29, 2011 at 5:49 pm

Hairdryer fix worked a couple of times. Have left tv on on an inactive channel for 4 weeks, with dark screen and annoying green lettering that can’t be defeated. Then switch to active channel and everything is fine until 2 days ago. Noticed a red tint to dark screen early in am. But worked fine when I switched to cable channel, Video 7. However, when I came back and checked, there was the tv doing that six red blinks thing. Perhaps a pet stepped on the remote and turned it off, but since then, cannot get it to start up . My question is, has anyone had their Sony successfully repaired? I am quite happy with mine when it works.


Devan July 2, 2011 at 3:34 am

Ok so i have a 25-30 inch (not exactly sure and dont feel like measuring) sony triniton in my living room and i broke the coax input off by accident so i gotta use av not a big deal except the cable box is broke too so i figure screw it and use the vcr for now, well tonight i was cruisin round with my dude and we found 2 tvs at the curb lol, both sonys, ones a sony 20 inch triniton looks exactly like the one i got cept a lil smaller and the other is a sony triniton hdtv 35 inch diagonally(i jus measured lol). So me and my buddy scoop the lil one thro it in tha back seat, we had some trouble gettin the heavy ass monster in the trunk but once it was there the frame of the trunk held it in place, i culd whip all the corners i wanted and it wasnt goin anywheres lol anyway once they were in the car i realized the owners how cut the power wires for some dumbass reason, mabe they didnt want animals to get tangled or some shit, so i get home me and my dude lug the monster out get it inside, i take it apart and splice the power wire onto a spare power cable i had laying around and i power it up and it comes on video 5, so im all happy so i go upstairs to get some cable and come bak down and it was off. Wen we picked it up it had collected some moisture from sitting there from the humidty of NJ, then i read this article bout the humidty sensor which is kinda dumb but also kinda smart on sonys part. Ive been trying this trick for 30 mins now and no results im thinkin tht maybe the humidty sensor blew out while i had first turned it on, and i was thinkin bout waiting till the next day to power it up so it culd dry out. If anybody culd shed some light on the issue id greatly appreciate it, you culd email me at, make the subject heading sony ty fix. Thx guys (i have an 01 heavily modded 550 horse triple black cobra btw lol if your in jersey and u got a nice whip comon out to the meets, races and cruises contact me) again thanx everybody and thx for your genius jammer


Devan July 2, 2011 at 3:37 am

O and where on the power supply is the humidity sensor if i culd get a picture then i culd find a part number and either try to replace it or bypass it


Devan July 2, 2011 at 3:38 am

I also meant to say a scamatic wuld help as well


James July 8, 2011 at 5:41 pm

Worked for me as well. thanks!
The circuit on D board is sensitive to heat and apparently there is no humidity sensor…so sorry :).
Anyway if you can solder apparently it is about $24 for the two IC’s (IC6501 and IC8002 part# MCZ3001DB ) when 6 or 7 flashing standby LED flashes are detected on front panel.

I haven’t tried it yet…but felt compelled to share my findings..


bob 7/10/2011 July 10, 2011 at 1:19 pm

thks ,worked first time[ combined vac. first then dryer] then after 5 min. turned it off & it came back on !..hope it continues to work.


Oldgymboy July 23, 2011 at 7:54 am

Blow dryer for a few minutes got our Sony Wega to turn on!!!


gemkay July 25, 2011 at 8:39 am

Can I use the blow dryer with the set turned off instead of unplugging it
from the wall?


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