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Equipment Repairs => LCD TV forum => Topic started by: chrissie jones on January 13, 2014,09:50:49

Title: toshiba 32AV554D
Post by: chrissie jones on January 13, 2014,09:50:49

this set came in dead.fues ok,caps ok..anyone had this faul before please..thanx chris

Title: Re: toshiba 32AV554D
Post by: jordan on January 13, 2014,11:16:32

Led- green,red, flashes ?????? what of this

Title: Re: toshiba 32AV554D
Post by: kennyc on January 14, 2014,05:29:28

Hi chrissie ,ive got the other Toshiba . I checked the diode in mine that Jordan talked about but it was ok in mine . The other diode that goes faulty sometimes I read was DE821 on left hand side of board ,good luck kenny

Title: Re: toshiba 32AV554D
Post by: Davy on January 14, 2014,09:52:38

Got one too.
Here's my post http://www.tv.quuq.org/forum/index.php?topic=8199.0

Mines no standby light Power ON pulse OK on main board but not reaching PSU, I tried removing the tac switch unit in case they were faulty, 5V OK.

I'm gonna try to force the power supply on and see what happens, then I'll do same with the inverter just to exclude them from the equation.

I thought a faulty eeprom would gave an error code.

Edited underlined - sorry.

Dave

Title: Re: toshiba 32AV554D
Post by: t1412 on January 14, 2014,10:07:34

hi chaps i don't know if this will help i had a 32av555ad no 5 volt, diode de821 sb260 was s/c good luck

regards
shaun

Title: Re: toshiba 32AV554D
Post by: Davy on January 14, 2014,12:12:56

FYI: Main power board SRV2169

Connector P811A pin 2 is 5V
Connector P810A pin 9 is 3V This is the smaller connector.  The 3V supply is derived from the 5V standby supply and comes from some SMD transistors on the underside.

All the connectors can be plugged or unplugged, except the mains obviously.

With NO mains power you can actually power the 5V from an external source by connecting 5V+ to it's rectifier cathode and the negative down to metal chassis, the 3 Volts will also be measured.

Might be useful, might be not.

Dave

Title: Re: toshiba 32AV554D
Post by: buggsy on January 24, 2014,08:47:10

Quote from: chrissie jones on January 13, 2014,09:50:49

this set came in dead.fues ok,caps ok..anyone had this faul before please..thanx chris

I HAD ONE OF THESE WITH YOUR FAULT IT TURNED OUT TO BE THE LDVS BOARD AS THE SCREEN WAS A SHARP SCREEN & LDVS CHANGERD LDVS AND IT WORKED ?.

BUT I :41: HAVE ONE OF THESE SETS BUT NOT A POWER PROBLEM

TV POWERS UP SOUND NO PICTURE BUT CAN ACCESS MENU , VOLUME BAR BUT WHEN RETURN TO TUNER MODE BLACK SCREEN BACK LIGHT ON SOUND ON BUT NO DISPLAY BUT SCREEN SHOWS TV CHANNEL INFO GRAPHICS..........ANY IDEA,S

Title: Re: toshiba 32AV554D
Post by: jordan on January 24, 2014,11:26:03

Reset appliance !!!!!

Title: Re: toshiba 32AV554D
Post by: Keith on January 25, 2014,08:28:56

Corrupt bootloader data in IC150, if my memory is correct, will cause a dead set, reprogram IC if you have a dump or replace the main board, there are different screen versions!

Keith

Title: Re: toshiba 32AV554D
Post by: Turnip on January 26, 2014,11:18:27

Hi, had one with that prob,

As Keith suggested, The Eeprom was the biz in my case. Trouble is, there are two on the main board, and I replaced the wrong one as had no info, but was enthusiastic.

Later got the correct screen version board from Fleabay.

Hope I'm learning - Thanks Keith - Chris.