Repairing Flat Screen TV - Blacked out with blinking red light

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Was brought a Flat Screen TV that had no image and a flashing red power light. I checked to see if there were any trouble codes given by the number of flashes (by checking online forums, etc) and couldnt find any. Opened it up to check further and had signs of blown capacitors. They were replaced which fixed that problem - but unfortunately it had been dropped while being brought to be so the screen itself was toast.This is an older model, they tend to be easier to open and access than newer ones.1 - Remove AC Power2 - Let it sit for a WHILE and/or short the Capacitors, Capacitors store energy and wont discharge for a while after AC power has been removed.3 - Un screw all screws on the back marked with an arrow, then try and carefully lift the back off and determine where its still binding, you might have to undo more screws that arent marked with an arrow like I did.4 - Locate the circuit board that has the AC adapter socket, this is likely where you will find the problem.5 - Find all the capacitors on the board and check them for signs of failure. Capacitors are little cylinders with a flat top with an X. If they have failed the X will be bulging out and you might see some leakage of the dialectic that's inside.6 - Remove circuit, replace damaged capacitors with new ones. The failed capacitors in this TV were 220μF and 25VDC. Get the same μF rating, but going to a higher voltage is fine, I used 220μF and 35VDC.7 - Replace in reverse order.8 - DO NOT test until the back is on the TV, there is a severe shock hazard otherwise.9 - Curse when you find your repair worked, but the TV screen is damaged....Here are some links with information on Capacitorshttp://en.wikipedia.org/wiki/CapacitorThe soldering Iron I use is the Circuit Specialists CSI-Station1A -http://www.circuitspecialists.com/csi-station1a.html

Komentarze

@brentmarr1331
@brentmarr1331 23-12-2019 11:42
clean the fan too
@uzomajoe8354
@uzomajoe8354 04-08-2019 20:07
good one
@shermaduncan4506
@shermaduncan4506 25-02-2019 19:14
At least say what is being done.
@xmenken1
@xmenken1 02-02-2019 00:14
Hello, you did not even check the circuit board with multimeter. And your TV screen is cracked! There is no picture on TV except color lines.
@lapstreet21
@lapstreet21 30-10-2016 09:25
sony bravia Model # KDL-48W600B six red lights blinking, what can be the problem =/ help the tv doesnt turn on at all?
@jabeywaqa7183
@jabeywaqa7183 18-02-2016 11:43
your fan has a lot of dust,,,forgot to spray
@mixme8655
@mixme8655 01-02-2016 10:59
thank you
@missionscrapprwill7530
@missionscrapprwill7530 20-12-2015 13:10
Well U Tried.
I Watched 3Videos So Far To Fx me Flat Screen Tv, the 1st one the guy takes me step by by step guide to DESTROY THE TV, i didn't see it comin till half way in to the video, but thats his Style Joke, 2Nd Video, this guy BLOWS UP HIS FLAT SCREEN TV IN HIS LIVING RM. At Least it made me laugh...Stay Encouraged
@adnansaad4308
@adnansaad4308 10-09-2015 12:03
Lol still broken
@kitkatpona
@kitkatpona 02-06-2015 07:37
Wow, this is fantastic. Thank you so much for posting this video. Can't wait to fix my tv now!
@ampac888
@ampac888 22-05-2015 04:07
May be just replace the entire main board will be easier than soldering work. but, if the cracked screen, then  it will be the main problem because no vendor sells the screen now ! The screen is simply not available to buy !
@lakhvirkaursingh52
@lakhvirkaursingh52 05-05-2015 05:38
How do I sort my tv confused
@arafathramseen387
@arafathramseen387 27-03-2015 20:46
model:42fd9953/69s
my problem
tv turns on but no image and power light starts blinking red
help me how can i repair 
@serialkisser3103
@serialkisser3103 17-03-2015 18:02
look like shit to me, nice wall paper LOL......
@bryge153
@bryge153 23-02-2015 09:37
So I was watching tv. When outta nowhere screen goes black but had sound..powered off....then on...got a screen for like 3 seconds then boom...black...so I know about the capacitors and the y board and all that good stuff....all was good...I was puzzled....here the whole time it was the fans....needed cleaned...
@MrMorpheussss
@MrMorpheussss 11-02-2015 05:52
What spray you used at 3:00 ?? Thank you
@hondo500e
@hondo500e 26-01-2015 08:39
@JAYKAYBRUH
@JAYKAYBRUH 05-01-2015 06:09
 have an LG 47 inch LCD, black out, open the back , no sign of any blown up capacitors, all the capacitors are flat , look ok, what could the be the fault , no picture, no sound, totally black just the red power light blinking on the corner
@ronniezzzz
@ronniezzzz 21-10-2014 03:12
why not clean dirty fan
@ronniezzzz
@ronniezzzz 21-10-2014 03:02
dirty fan

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