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Equipment Repairs => LCD TV forum => Topic started by: jima1vespas on May 27, 2009,11:00:45

Title: humax lgb-19dzt stuck in standby
Post by: jima1vespas on May 27, 2009,11:00:45

humax lgb-19dzt stuck in standby does anyone know how to fix this fault?

Title: Re: humax lgb-19dzt stuck in standby
Post by: Keith on June 02, 2009,06:04:02

Stuck in standby or no remote control functions is usually caused bt the electrolytics in the PSU.
The main culprit is a 1500uF, I think, cant remember the circuit ref as I havent seen one for a while. But it is visually faulty!

Keith

Title: Re: humax lgb-19dzt stuck in standby
Post by: jima1vespas on June 07, 2009,05:16:01

Hi thanks for the info, none of the caps were visually faulty but i replaced them all to make sure however this has made no difference and stil won't come out of standby

Title: Re: humax lgb-19dzt stuck in standby
Post by: WILLYAM1 on June 09, 2009,15:53:47

power supply stuck in stby.
check 5v stby in p.s whith scop.if ok check one of the leg (power on) in p.s (3v-5v)by operting remot
ifok problem in p.s if no problem is in main board ceck 1.8v 2.5v 3.3v regulators also waveform in x tal cristal and disconect cabel of panel botton from main board  could be memory or prosesor .
good luck.
willyam1

Title: Re: humax lgb-19dzt stuck in standby
Post by: jima1vespas on June 20, 2009,12:06:49

there is a 5v on the s/b but the other 12v and 5 volt supplies are missing should they be there when the tv is in standby or just when its powered up, i do not have the remote so can not do the test you said