Alba 32880hdf Flashing standby

[anotherdude]

Picked this up last night originally told stuck in standby (assumed just solid standby) but it flashes blue and red indicating a problem in the self check i think

Anyway measured the voltages from the psu to the mainboard and the only one that currently stands out is the 12v reads 11.7 not really much of a drop but only one i'm really noticing

BL inverter reads 25v which should be correct I think, tried the obvious disconnecting boards one by one etc

any suggestions?

Disconnected the main board and powered it up the 12v pin now reads 12.6v with the main board disconnected, points to a main board fault?

edit2: looking through the 17pw25-4 schematic there is a 24v aud pin on PL805 but i read nothing at this pin when not connected to the main board, also the same when main board is connected

[anotherdude]

Re: Alba 32880hdf Flashing standby

any help, looked through a lot of previous posts with similar startup issues

[tom66]

Re: Alba 32880hdf Flashing standby

What's main board on this?

[anotherdude]

Re: Alba 32880hdf Flashing standby

17mb62-1

only find it in stock in one place at near £40

[tom66]

Re: Alba 32880hdf Flashing standby

SCH:


Locate TP202 PROTECT circuit and check voltage.

[anotherdude]

Re: Alba 32880hdf Flashing standby

SCH:


Locate TP202 PROTECT circuit and check voltage.

it reads 3.36v

[tom66]

Re: Alba 32880hdf Flashing standby

I think that's good. You might have corrupted firmware. It is possible to update the firmware but it's difficult, you need the BIN file and a USB memory stick.

[vinceroger69]

Re: Alba 32880hdf Flashing standby

https://www.badcaps.net/forum/showthread.php?t=22989
not sure if you read this post 21 onwards i guess

[anotherdude]

Re: Alba 32880hdf Flashing standby

https://www.badcaps.net/forum/showthread.php?t=22989
not sure if you read this post 21 onwards i guess

ye I did read that, but I can't see anything removable on this to put a new eeprom in, not sure how i'd go about only connecting up the yellow and black cables on there own to the touch panel on the lower bottom.

and thats a different board too, not sure if it matters but i know the touch panel is in a different position, also have tried without the tcon and still get the same, no glimpse of a backlight either

[anotherdude]

Re: Alba 32880hdf Flashing standby

I think that's good. You might have corrupted firmware. It is possible to update the firmware but it's difficult, you need the BIN file and a USB memory stick.

this tom?
http://elektrotanya.com/vestel_17mb6.../download.html

[vinceroger69]

Re: Alba 32880hdf Flashing standby

ye I did read that, but I can't see anything removable on this to put a new eeprom in, not sure how i'd go about only connecting up the yellow and black cables on there own to the touch panel on the lower bottom.

and thats a different board too, not sure if it matters but i know the touch panel is in a different position, also have tried without the tcon and still get the same, no glimpse of a backlight either

well it was worth a read im sure you will sort it out.

[anotherdude]

Re: Alba 32880hdf Flashing standby

so for the hell of it I thought i'd plug in a usb drive to see if it got any activity the first time i plugged it in the pen drive lit up briefly for maybe 2 or 3 seconds and since then it no longer lights up showing power etc

I know this is probably nothing but the main board was outputting the 5v at least for the usb at one point

edit: again maybe nothing but thought i'd try anyway, powered the tv off by mains and connected a xbox360 (via hdmi) and powered it on, the xbox360 wont boot fully without a valid video signal the other end or something to say yes or however hdcp works, anyway I let the xbox360 sit there and it done nothing as it's supposed to, powered the tv on and got the flashing led on the tv but the xbox360 proceeded to boot as normal

So some part of the main board is still active, again maybe nothing but it's a start...

[vinceroger69]

Re: Alba 32880hdf Flashing standby

this tom?
http://elektrotanya.com/vestel_17mb6.../download.html

did you the update.

[anotherdude]

Re: Alba 32880hdf Flashing standby

did you the update.

no , no idea on how to even do it

[vinceroger69]

Re: Alba 32880hdf Flashing standby

im sure tom will be along to advise be good to know actually for future refrence.
did you read this https://www.badcaps.net/forum/showthread.php?t=29238

[anotherdude]

Re: Alba 32880hdf Flashing standby

im sure tom will be along to advise be good to know actually for future refrence.
did you read this https://www.badcaps.net/forum/showthread.php?t=29238

ye i seen that too, judging from the post it seems he had access to the screen to update it etc whereas I don't

from reading you need to get to the service menu to do it, i'm guessing tom is talking about doing the update blind so to speak

[tom66]

Re: Alba 32880hdf Flashing standby

It is possible, but I'm not sure how. I heard it's related to inserting USB, and pressing some buttons on touch panel.

[vinceroger69]

Re: Alba 32880hdf Flashing standby

quote from the link
The flashing LED can indicate a short-circuit, so with the aid of the manual you need to check the voltage rails on the main board first. You will also get the same symptoms if the firmware is corrupted. I can send you the firmware I have for this model, which you shove on a USB stick, power down the TV (pull the plug), put the stick in the TV, hold "OK" on the remote, plug TV back in still holding OK down until LED responds, then let it do it's stuff and if successful the set will power up to the install screen after a minute or so.
so do you need to see the screen? not sure

[anotherdude]

Re: Alba 32880hdf Flashing standby

quote from the link
The flashing LED can indicate a short-circuit, so with the aid of the manual you need to check the voltage rails on the main board first. You will also get the same symptoms if the firmware is corrupted. I can send you the firmware I have for this model, which you shove on a USB stick, power down the TV (pull the plug), put the stick in the TV, hold "OK" on the remote, plug TV back in still holding OK down until LED responds, then let it do it's stuff and if successful the set will power up to the install screen after a minute or so.
so do you need to see the screen? not sure

well that went tits up, done that with the update file on the stick, the led stopped flashing and remained blue the pen drive had acitivity, let it sit there for 5 minutes after no activity powered off and now have no led, the xbox360 no longer sees the hdmi either

usb still gets activity and the led lights up briefly if i press buttons on the remote at power on

seems it now does need a new main board

[multimeter]

Re: Alba 32880hdf Flashing standby

what EEPROM is on the main board?,maybee one that can be reset,using a pin to pin short,that might bring it back