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Service manuals & datasheets => LCD TV forum => Topic started by: hoodymanboy on March 29, 2011,12:13:16

Title: Goodmans LD1925Wcircuit diagram required
Post by: hoodymanboy on March 29, 2011,12:13:16

Please help! The set is dead

Title: Re: Goodmans LD1925Wcircuit diagram required
Post by: tv tony on March 30, 2011,12:14:32

have you got rectified mains, have you any secondary supplies, is 5v line ok, is there a short on any supplies, could be the picture valve, im sorry to bitch on but this site is getting so full of non-engineers!
sorry to be so cutting but please supply more information and i will  put my crystal ball away

Title: Re: Goodmans LD1925Wcircuit diagram required
Post by: hoodymanboy on March 31, 2011,05:29:13

Sorry TV TONY.  New to your forum. I am a long retired radio /tv Engineer with my apprenticeship commencing 1950. So not without a grounding in basics of the trade.I am sure I can cope with fault findingbut the use of a schematic diagram would make this much easier, hence my initial request.
hoodymanboy.

Title: Re: Goodmans LD1925Wcircuit diagram required
Post by: tv tony on March 31, 2011,05:38:43

hello, in that case i bow down to you, sorry, what is the number on the psu, that will be a starter, although there will be no ey51,s in cascade (projection sets)or pl36 so dont even look for one, pm me (personal mail)

Title: Re: Goodmans LD1925Wcircuit diagram required
Post by: Turnip on April 01, 2011,13:27:47

Hi, Hoody,

Had something like it in an LD1930W an analogue 16:9 where the SM input fuse was O/C for no obvious reason - replaced it with 5A  - set had a Vestel type 4 pin power supply.

Hi Tony - anything on LG42PC1D S/by power  ?  - Doing an oil change on a Murphy LOPT whilst waiting for the U25 to appear on Ebay - Chris.

Title: Re: Goodmans LD1925Wcircuit diagram required
Post by: hoodymanboy on April 04, 2011,11:53:00

Hi Tony, The power supply on this set is from an external AC Adaptor ( !9 volt 3.42amp ) This voltage is apparent on PCB but due to my eyesight (poor these days,) i was unable to check further. I have to admit my failure to move forward with modern technology even to the value markings on components  Had this set been of vintage valve era I'm sure I would have coped with the problem of a grandaughter TV breakdown.
Thanks also to Turnip for his input

Title: Re: Goodmans LD1925Wcircuit diagram required
Post by: tv tony on April 05, 2011,06:34:49

hi, im getting same, bring back the jelly pot and mains eht, when ive done at this place im off, thermionic stuff was a lot more friendly, take care,
tony walker

Title: Re: Goodmans LD1925Wcircuit diagram required
Post by: Turnip on April 07, 2011,13:18:07

Hi Tony,

Must confess, while working bench at Rediffusion Norwich used always to light fags on the 3000/3500  jelly-pot LOPT output - just to check -

Returning one day after a liquid lunch, saw Jesus after re-lighting a rather damp short end - now happy all the day - stiil poor though - Chris.