Re: Jvc lt-50e73
here it is...
fester
Senior Member
Last Activity: 11-19-2024, 03:50 AM
Joined: 05-09-2017
Location: Kopcany
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Re: Jvc lt-50e73
Exactly, desoldering flash chip,programming and soldering back. you can also sometimes find flashed chip for your tv on ebay or soLeave a comment:
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Re: Jvc lt-50e73
Yes,solved with reflashing firmware....Leave a comment:
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Re: Lenovo T510 Fan error
The same problem ,shorting B anc C of Q20 helped. This new ordered fan have probably another output section for rpm sensing. thanksLeave a comment:
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Re: Jvc lt-50e73
Sorry for delay,i am too busy last few weeks..here the meassurements in volts.....Leave a comment:
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Re: Jvc lt-50e73
no,i meassured voltage between two pins of one connectorLeave a comment:
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Re: Jvc lt-50e73
i have voltage spikes on both connectors,max value what i see on multimeter is arround 90V. if i disconect one connector,no matter which one,the same behavior,only short blink of backlight.Leave a comment:
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Re: Jvc lt-50e73
hups,t-con is visible,under metal plate is only display board...Leave a comment:
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Re: Jvc lt-50e73
here it is,t-con board is under metal plate,i dont removed it yet....Leave a comment:
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Re: Jvc lt-50e73
ok,friends,i looked at the screen with flashlight..picture is there,backlight is missing..Leave a comment:
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Re: Jvc lt-50e73
Yes i tried to repair this audio problem with firmware flashing. i used fw found here : [URL="[HTML]https://www.elektroda.pl/rtvforum/topic3376218.html[/HTML]"][HTML]https://www.elektroda.pl/rtvforum/topic3376218.html[/HTML][/URL], this dump looks like correct version for my tv.HTML Code:Re: Jvc lt-50e73 Yes i tried to repair this audio problem with firmware flashing. i used fw found here : [URL="[HTML]https://www.elektroda.pl/rtvforum/topic3376218.html[/HTML]"][HTML]https://www.elektroda.pl/rtvforum/topic3376218.html[/HTML][/URL], this
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Re: Jvc lt-50e73
No,i lost picture when i reflashed fw. Dont know if audio is now working because i see nothing on the screen,cant test it but amplifier electrically is ok . TV also react to IR remote - LED is blinking. I will try it with flashlight tomorow,will see if is panel completely without picture or only backlight missing....Leave a comment:
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Jvc lt-50e73
Hi friends.
I have this TV for repair,everything worked,only sound not. Audio amplifier cirquit is workind,if i touched on input pins,i hear noise comming form speakers. I found somewhere that this TV have problems with corrupted firmware so tried to flash firmware found on net with the same LCD number. From this time,TV is not working anymore, at start,it only blinks with JVC logo,only fraction of second,blue led stay on and nothing..the same behavior is now also with original dump. I thried to erase flash chip first(fill with #FF),then flashing,no change.. Flash chip is ok,i can write,read,verify... -
Re: Compaq Presario CQ70 - Display ok without backlight
also a solution :-)Leave a comment:
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Re: ASUS X70A Totaly dead
it8512 have external flash chip inteface so there should be separate memory chip for this ECLeave a comment:
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Re: Hp compaq 2510p schamtic needed
Here it is...Leave a comment:
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Re: Compaq Presario CQ70 - Display ok without backlight
look in the schematics where 3VS is created.meassure this point and if you find that 3VS is present,make jumper to lvds connector.is possible that some trace on pcb is blown.Leave a comment:
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Re: Compaq Presario CQ70 - Display ok without backlight
blown R222? or something on page 30 :-)Leave a comment:
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Re: How do i repair this?
microscope or good magnifying glas,thin wire for reconnecting all traces,uv curring solder mask,new connector or the old one is is usable and a bit of patience..Leave a comment:
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Re: Asus ROG G750JZ
:-) you have bad contact somewhere..can you post some photo from dcin board?Leave a comment:
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