Re: Toshiba 50L7300A turns on then blue screen
Yh, whatever is in the zip file put on the usb stick.
Yh, whatever is in the zip file put on the usb stick.
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Re: Toshiba 50L7300A turns on then blue screen
Perhaps have a quick look at this recent post
'LG 42LV355T Blue screen No picture', sound like your problem?
Could well be!
I still think you should forget about the fw upgrade for now until we can exhaust all other options.Last edited by notallbad; 04-18-2020, 04:45 PM.Comment
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Re: Toshiba 50L7300A turns on then blue screen
Tried with just the .fwu, USB formatted to FAT32, exactly according to the instructions that came with the software download. Still the exact same result.
After connecting it to power, I've tried using the on/off button on the back panel and the TV stays on. As part of the FW upgrade is holding down the Vol- button. Is it possible all four buttons are just not properly connecting?
All advice greatly appreciated.Comment
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Re: Toshiba 50L7300A turns on then blue screen
This is way more in-depth. What are the differences between the LG's symptoms and the video I originally posted?
I'll have a go with my multi at recreating some measurements, thanks again.
With any luck I'll be able to get as specific a diagnosis as yours!Comment
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Re: Toshiba 50L7300A turns on then blue screen
well just start by inspecting both sides of the boards closely just to confirm theres no obvious blown components.
Its a process of elimination.Last edited by notallbad; 04-19-2020, 01:42 AM.Comment
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Re: Toshiba 50L7300A turns on then blue screen
Post #1:
"turns on and displays the Red Toshiba logo"
Please clarify. Are you saying that you see Toshiba logo on the screen, meaning it shows video for seconds and then goes blue screen?Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809Comment
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Re: Toshiba 50L7300A turns on then blue screen
https://imgur.com/a/wdqRLEI
This^. Basically when I plug it in, the light turns green, logo splash occurs normally, followed by a couple of seconds of black, then blue indefinitely.
The four buttons on the back panel haven't yielded any results or response. The Vol- button is used for the FW upgrade but that process didn't work. The source/menu button hasn't had any effect, and even the power off button doesn't do anything once the TV is on.Comment
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Re: Toshiba 50L7300A turns on then blue screen
Maybe unplug the ir board, see if tv turns on.Comment
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Re: Toshiba 50L7300A turns on then blue screen
I do not see any pictures in your link. Just use the attachment function and upload them here instead.Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809Comment
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I have a second hand Toshiba 50L7300A which, when plugged in, turns on and displays the Red Toshiba logo, but then displays a bright blue screen.
I understand this may be a problem with the main board (32L4300 rev 1.02a) but I'm not sure, and they're very difficult to find now anyway.
I tried updating the firmware - the USB flashes a few times when plugged in, then nothing happens and the blue screen is still all I get.
I also have no remote for this TV.
Video of the problem:
imgur.com/a/wdqRLEI
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