Thanks for this. I had sound but no picture on mt LT-40C890. After watching this video, my son was confident enough to take the back off the set, check the connections and retry the set. Lo and behold, it worked. As in your video, my set obviously had a faulty connection. Thanks for saving me the cost of a callout and repair. I'm very grateful.
Hi my JVC 40" tv back-light have gone dim on mine , it happened an hour ago , although my TV is now 8yrs old ...anyway the light is twitching could it also be z loose connection? Thank you and thank you for sharing this superb video as well ...
Having taken a punt on a bargin basement broken LT-43C890 I was prepared to replace backlights/power board/mainboard. I came across your video and took some measurements and all seemed ok. I tried your recommendation to reconnect all power leads and exactly as your video it jumped into life. One comment i would say on your videos though is if you could explain your testing procedures a little more in detail, where to get best schematic, what to zone in on to narrow down the issues and specify the multimeter settings and component your testing and why.
@@allenfleckney5969 Hi Allen I was wondering if you had an email address i could send you a photo of my JVC led 32 onch screen with backlights which has got me wondering☺
hello, brilliant movie, I have a different problem with the same model, including its ssiptv application, is it possible to reprogram it to a smart iptv.
I can get mine going by using a hair dryer on the psu board for a couple of mins. It works all night after that but then fails again next day. I've resoldered all the sm components. What can be up with it?
I have jvc 43 inch 4k smart tv....mine is a 1907....no back lights, so i did what you did, took back off, unpluged any connection i could find....put all back together..it now works....is it what iv heard people say ' dry joints' im guessing that means some sort of build up on electrical connections, i dont know.
My experience with the Currys "JVCs" was terrible - back in 2016 I bought one and it hadn't even been made right, I seem to remember it had a bit of gasket foam going in front of the screen, so I took it back and they gave me another one which changed inputs on its own, so I took *that* back and chose to get a "Panasonic" as a replacement (which now turns itself back on if not turned off at the wall). Of course, I later found out they were all Vestels...
Cannot vouch for Currys at all. Personal experience has led me to believe that the business model is capitalist rather than customer based. I purchased a new computer that turned out to be used! It took three months, a small claims application and MP involvement to gain my refund. Untrained staff work in all areas - including repairs. Furthermore, a TV I repaired, after Currys had declared it unrepairable, sported a self tapping screw that extended from the rear cover and into the backlight diffuser! Clearly somebody had replaced the wrong screw type to secure the rear cover - and could do simple diagnostics either! Avoid Currys IMO.
Wish I lived near Cornwall. my JVC (LT-43C890) has just gone t1ts up and it's the backlights (but watching this it COULD just be a loose connection) not sure this is something I can tackle as I don't own a multimeter so no way to actually check - guess I need to need to find a tv repair guy or girl in Kent, near London, that is NOT going to cost the earth (or it will be cheaper to buy a new tv LOL) I possibly could take the back off and just push the connectors in in case that will fix it. should I leave the tv unplugged for a couple hours before I do this (bear in mind I'm not 100% sure what I'm doing with this tv repair malarky but can push connectors back in) as I'm presuming this would allow capacitors to discharge or does this not matter as I'm not poking around and just need to make sure it's not plugged in. just curious - what setting do you recommend for JVC tv that the backlights be on as you said, well, hinted, that sport + 100% was going to burn them out in a year LOL
I have same problem with a 40" jvc will work fine then back lights fail have changed power board still same , strip down wiggle wires put back works again for a while very frustrating
I have a jvc lt-55c550 and it started getting dark in the bottom left corner of the screen then the top right corner went dark and now all the screen is dark. It has sound and if I shine a torch on it I can see the picture. Do you think this is a back-light or a board issue? Thanks for any advice Miranda
I have the same TV with the same problem. Had a flashing red light. Took the back of an wiggled the power lead and got it to work. Put it back together and it stopped working again. So took it off and done the same thing again and got it to work. Is there anything I can do to stop this happening again/decrease the chances of it? Thank you🙂 (ps great video, most definitely was the personality😅)
@@allenfleckney5969 perfect, thank you very much! Will be doing this soon when I have the time. I work away so have just had the TV sat at home not being used for months🤣
hi mate ive came across this issue with about 5 tvs similier models to yours same psu , when u put your tester on the lights and ligfht them up and try the tv it comes on it lasts about a week and goes back off. ive fixed a few by replacing the psu others i needed to change the leds full set as i could not find any bad ones. its very strange i do recon its eather the psu fault or the little diode on the the leds that fails. have you had any other info on this mate thanks
Yes. I’ve been meaning to do an update as I thought it was the psu as that seems to get them going again for a few weeks , but last year we paid attention to the strip contacts and found the copper elements on the end of the strips , usually the top strip had a small black pitted hole. Simply re- tin the contacts and push them back in the sockets and they work again as they should. It’s just bad contacts that start to arc.
Great video thanks ! i have the C209 capacitor bulged up it's a 92µF 100V can i replace it by a 100µF 100V ?? or it must be the same value ??? Please help meee !! Thanks
ive got jvc 43" smart tv which has a blue tint through ive tried checking the settings and resetting back to factory settings but its still blue , checked the led and they all come on with none burnt out so n ot sure if a psu problem for the led driver or what any ideas ?
I had the exact same issue Jvc lt40c890 took it apart fiddled a little with backlight wires and power connection working perfect now. Did you have anymore problems after you fixed it? Not 100% convinced it will stay working for me thanks your video helped me fix it 👍🏼
Hi Keith. After further inspection any TV that uses this screen with this Power supply will have the same issue. It’s not the backlights but the led driver circuit on the Powerboard. I eventually changed the board and it never came back
@@allenfleckney5969 Your a legend! Thanks so much for taking the time to get back to me really appreciate it. I’m going to order a New Power Board and hopefully it will continue to work👍🏼
@@allenfleckney5969 Hi Alan, I replaced the PCB board with a Brand New one and it still doesn’t turn on? Well I tried! Still flashing red light when I go to turn it on… it eventually will turn on after turning it on and off a good few times? Any ideas? Think it’s for the bin 😂
Hi Keith. You need new backlights as well. See my latest video from yesterday about this set. Both power supply and backlights are weak. Don’t bin it. Send it to me if your stuck.
@@allenfleckney5969 Hi Alan thanks for reply, where do you order the back lights from? I like fixing things but not sure if I want to spend anymore time and money on it to be honest? Spent 50 on Brand New PCB, I have taken it apart about 4-5 times now it’s driving me mad! 😂
@@alden5903 if all your backlights are ok it’s where the strips connect to the aux board just scrape away some green solder mask and solder a link wire to the strip instead of relying on the plug and socket do it to all the strips, need more help let me know
@@alden5903 guessing you have tested the led strips and they work with the screen etc off so you have the led strips showing on one side there will be a green connection strip that the leds strips plug into You will see the pub traces on the green strip scrap some off so copper is showing then bridge the connector so put a link between the green strip and the led strip also make sure there is no connection midway on each strip as you will need to link them as well
