Toshiba 50L7300A turns on then blue screen

[notallbad]

Re: Toshiba 50L7300A turns on then blue screen

Yh, whatever is in the zip file put on the usb stick.

[notallbad]

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.

[Woollyentity]

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.

[Woollyentity]

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?

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!

[notallbad]

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.

[budm]

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?

[Woollyentity]

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?

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.

[nomoresonys]

Re: Toshiba 50L7300A turns on then blue screen

Maybe unplug the ir board, see if tv turns on.

[budm]

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.