Toshiba 32av713b1

[ozy]

Anybody got an eprom dump for a Toshiba 32av713b1.
Its for the 24c32 (u609) , it uses 715g3705-m01-000-005b main board (cbpfa4bbz4s01)
Fitted a blank ic now get power led and flashing green led on power up but no other sign of life.
Thx

[ozy]

Re: Toshiba 32av713b1

Must have been a faulty eprom just fitted another and set powers up but the picture is bad as in the attached img. Any ideas?

[budm]

Re: Toshiba 32av713b1

Looks like Gamma Voltage problem or the screen model does not match the main board, you will have to go into service menu mode to see if the LCD panel number match what is shown in the service menu. Notes: I do not remember how get into service mode in TOSHIBA TV.

[ozy]

Re: Toshiba 32av713b1

yea was just looking to see if it used a as15-s or equiv but it don't so looks like you could be right about panel selection just looking through service manual now but that don't seem much help.

[budm]

Re: Toshiba 32av713b1

Does the service manual tell you how to get into ON SERVICE MEN MODE? You will probably need the original remote to enter the code to get into service mode.

[ozy]

Re: Toshiba 32av713b1

no cant find anyting in the service manual about it.

[vinceroger69]

Re: Toshiba 32av713b1

not sure if this works
LCDs :


* Press the {MENU} button on the remote.
* Highlight the "Picture" icon.
* Press the {9} {3} {0} {1} buttons
on the remote control.

* The Service Menu will be displayed
with the following Modes:

"Options" - "Adjustments" - "Selections"

* Use the {OK} button to access and
navigate through these Modes.

* To change values use {VOL +} {VOL-) {P+} {P-}
* To exit, press the {MENU} button.



***Yet another Different Method*********************************
enter the main menu by pressing “M” button and then press the digits 4,
7, 2 and 5 respectively.

http://www.riddledtv.com/forums/tosh...-lcd-t297.html

[martino]

Re: Toshiba 32av713b1

https://www.youtube.com/watch?v=xDFXYguYCA8

[ozy]

Re: Toshiba 32av713b1

tried all the above.
mute mute meu on tv
mute mute mute menu on tv
menu 9301
menu 4725
vol- 9

no joy with any...

[vinceroger69]

Re: Toshiba 32av713b1

ive just dowmloaded the manual too i cant see the service code either i will upload the manual as maybe usefull for other members

[ozy]

Re: Toshiba 32av713b1

yea that's the same manual I have, strange why its not mentioned in there........
Thx for looking

[ozy]

Re: Toshiba 32av713b1

while I was trying to access service menu the screen froze and the set shut down, so unplugged it and set had reverted back to its orig fault of no sign of life but 5-12-24v all present at power supply.
I resoldered u104 (3.3v reg that supplies dvdd3v3 that pwrs eprom) and replaced c117 (470uf 10v) both capacitance and esr checked ok but changed anyway. Refitted orig eprom (u609) and set now powers up with good picture.
will leave it on test and see how it behaves.

[Diah]

Re: Toshiba 32av713b1

re soldering u104 was the main fault, orig NVM had its ready written set register and values you are done but remain some side effect, as you need to check and try signal from all sources ... good work

[ozy]

Re: Toshiba 32av713b1

Well left it on test but this morning its back to the faulty state with no signs of life.

[Diah]

Re: Toshiba 32av713b1

Well left it on test but this morning its back to the faulty state with no signs of life.

its look bad socket or soldering

[ozy]

Re: Toshiba 32av713b1

no socket its soic direct to pcb, soldering fine wonder if its the scaler ic as that's bga.

[vinceroger69]

Re: Toshiba 32av713b1

does heating the area of the bga make the tv start?

[ozy]

Re: Toshiba 32av713b1

will try that later, the eprom is only about an inch away on the opposite side of the board. going to dump eprom to I think.

[ozy]

Re: Toshiba 32av713b1

right I have dumped the eprom (u609) fitted a blank and power led flashing green, removed and refitted orig and reflowed nand and ram chips, set now powers up again and is working, will leave on test and see.
I have attatch dump of the origenal u609 not sure if it is a good dump as set seems buggy but this may or maybe not down to the dump but the set powers up and runs with it.

[ozy]

Re: Toshiba 32av713b1

still not working, the fault seems to be occurring more often now, from cold fault there, warmed scaler ic u401 (mt5363efcg) and set powered up.
Removed heatsink and just reflowed the bga chip, resoldered heatsink back and set back on test.
If this don't work I think It will be a scrapper....