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Equipment Repairs => LCD TV forum => Topic started by: Davy on November 07, 2020,09:20:53

Title: JVC LT48C570 dead but power OK -
Post by: Davy on November 07, 2020,09:20:53

When switched on the standby led comes on for2 or 3 seconds and then goes out - all supplies are up and running. Backlight LED test OK on both sections.

I suspect it may be a firmware issue.... it could also be a fault on main board - can anyone throw some light? Thanks.

Dave

Title: Re: JVC LT48C570 dead but power OK -
Post by: downunder on November 08, 2020,03:28:55

Hi Dave, Could well be a firmware issue. There are several brands that use the same firmware (apart from the logo), and they all seem to suffer the same issue. Have to see if you can track down an upgrade.             

Bruce

Title: Re: JVC LT48C570 dead but power OK -
Post by: Davy on November 08, 2020,05:15:47

Thanks Bruce, I was thinking firmware issue.... they sure don't make em' like they used to do, think their idea is if it 'conks' out you 'clod it or'e next door' and go buy a new one, far too many made under license these day's whose name on the telly isn't recognised..... "not one of our telly's guv, sorry can't help ya".

Not so bothered about the logo as long as telly works, no naughty names though....!

Dave

Title: Re: JVC LT48C570 dead but power OK -
Post by: Davy on January 01, 2021,15:44:35

Had another one..... exactly the  same, LED flashes about every two minutes with a clicking sound from the speakers.

No one seems to wanna be owning these sets not even JVC, from what I was told there are only Curry's and PC world TV's.

Dave

Title: Re: JVC LT48C570 dead but power OK -
Post by: Davy on May 28, 2021,16:11:17

Still trying to get a JVC LT48-C570 flash dump for this Curry's/PC world LED telly. The main board is a T.MS3463S.711 with a LSC480 HN08-8 screen.

Anyone know of a similar flash that may help? 

Thanks, Dave.

Title: Re: JVC LT48C570 dead but power OK -
Post by: fix2003 on May 29, 2021,02:37:21

try here may help
https://www.soft4led.com/2020/05/cv56bl-q24-all-firmware-free-download.html

seems this is a china chassis similar to the cv56bl range of sets

the link is to a big site with pages and pages of firmware for many versions of china main boards

Title: Re: JVC LT48C570 dead but power OK -
Post by: Davy on May 29, 2021,10:21:23

Wow that is a interesting site.... but afraid I can't find the exact number, pleanty of T.MS3463S but the numbers after don't match.

Thanks for the link. Dave

Title: Re: JVC LT48C570 dead but power OK (Sorted)
Post by: Davy on July 07, 2021,14:13:12

A new board cured the problem, I suspect firmware problem - Badged TV's should be banned, JVC, "Not one of our telly's", they replied.

Davy

Title: Re: JVC LT48C570 dead but power OK -
Post by: downunder on July 08, 2021,05:19:16

Hi Davy, Seems to be a universal problem. Imported by the container-load. All swwet till they break down.