Someone please help, my Grundig GULCD37HDIT wont turn on and is stuck in the standby light. 
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Re: *Please help* GRUNDIG GULCD37HDIT wont turn on
Done ANY diagnosis of fault?
Did it occur suddenly?
No audio, no back light? (screen glow slightly)
Skills / abilities -- do you have a multimeter (digital one?)
Screwdriver to take it apart
Camera to get pics?Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search. -
Re: *Please help* GRUNDIG GULCD37HDIT wont turn on
post up some pics of power supply using manage attachments.
what have you checked so far?fixed so far...376 lg lcd tv's,24 onn tv;s,24 panasonic lcd,16 jvc lcd,12 marshall jcm800 amps,refurb of various disco equipment lighting,old style disco decks ,and a flymo!
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please let us know if everything works ok if your tv gets fixed, as it will be and aid for anyone else having the same problem and wishing to fix it.it would save people clogging up this site with topics that are duplicated,and can be found easily using the search function.,and taking up valuable space.enjoy your fixed tv!,hopefully!Comment
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Re: *Please help* GRUNDIG GULCD37HDIT wont turn on
Thanks for the reply guys, my skills are limited to electronics im afraid and I don't have a multimeter. I may be able to source one from a friend at work if I can. I have taken the back cover off and it has a PLCD 190 PT3 power board or power supply board.
The screen remains black when switched on.
The tv is responds to the remote and the standby button on the side by the standby light going from a bright red to a dim red. That's the only response from it.
I'll try getting pics on here but please bear with me Im not entirely sure how to do that.
ThanksComment
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Re: *Please help* GRUNDIG GULCD37HDIT wont turn on
Pictures of the boards inside the tvAttached FilesLast edited by simple-me; 01-12-2014, 12:09 PM.Comment
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Re: *Please help* GRUNDIG GULCD37HDIT wont turn on
refer to post #2 before you carry onfixed so far...376 lg lcd tv's,24 onn tv;s,24 panasonic lcd,16 jvc lcd,12 marshall jcm800 amps,refurb of various disco equipment lighting,old style disco decks ,and a flymo!
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please let us know if everything works ok if your tv gets fixed, as it will be and aid for anyone else having the same problem and wishing to fix it.it would save people clogging up this site with topics that are duplicated,and can be found easily using the search function.,and taking up valuable space.enjoy your fixed tv!,hopefully!Comment
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Re: *Please help* GRUNDIG GULCD37HDIT wont turn on
Done ANY diagnosis of fault?
Ive not done any diagnosis of the fault. I'm not sure where to start really. I've checked the psu board and can't see any bad caps.?
Did it occur suddenly? Yes it did
No audio, no back light? (screen glow slightly) No audio and back light...I can't see a glow on the screen, maybe if turned the lights off to be sure??
Skills / abilities -- limited but can try I understand a little
do you have a multimeter (digital one?) I'll try sourcing one from a friend at work.Comment
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Re: *Please help* GRUNDIG GULCD37HDIT wont turn on
The only diagnostics I have done is take voltages with a meter. there is no audio or back light no screen glow.
When I turn the tv on its in auto in standby. I get 11.5v on 3 pins and on 2 of them voltage doesnt stay up. I also get 25.5v in 2 places (+12vL) and these also don't stay up. The only voltage to stay up is the +5vstby which shows a constant 11.5v.
when I press the stby button on the remote I get a constant 25.5v in the +12vL pins. I also get a constant 11.5v at the 5vstby pins.
hope this makes sense. I have a picture showing all the voltages...on left when on stby, on right when stby pressed on from remote.
Thanks
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Re: *Please help* GRUNDIG GULCD37HDIT wont turn on
Set your meter to DC not AC. Also check the battery is fresh, those readings are much too high.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: *Please help* GRUNDIG GULCD37HDIT wont turn on
PSU voltages look OK, so it's probably a main board fault.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: *Please help* GRUNDIG GULCD37HDIT wont turn on
pictures of the main board also the part number from it including any numbers on stickers on it.Comment
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Re: *Please help* GRUNDIG GULCD37HDIT wont turn on
voltages when on? can you find any fuses other than the mains one
may be labelled F*** but may look nothing like a mains fuse - can be square box
upright barrel, torpedo , and all coloursPlease upload pictures using attachment function when ask for help on the repair
http://www.badcaps.net/forum/showthread.php?t=39740Comment
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Re: *Please help* GRUNDIG GULCD37HDIT wont turn on
check ps_on signal at mainboard end,keep meter connected to this pin,and power up tv,does it rise and stay,or just drop off?fixed so far...376 lg lcd tv's,24 onn tv;s,24 panasonic lcd,16 jvc lcd,12 marshall jcm800 amps,refurb of various disco equipment lighting,old style disco decks ,and a flymo!
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please let us know if everything works ok if your tv gets fixed, as it will be and aid for anyone else having the same problem and wishing to fix it.it would save people clogging up this site with topics that are duplicated,and can be found easily using the search function.,and taking up valuable space.enjoy your fixed tv!,hopefully!Comment
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Re: *Please help* GRUNDIG GULCD37HDIT wont turn on
The only3 voltages coming up when turned on are where the 5.6v were showing. I get 5.6v at the +5vstby pin, the other 2 are showing 0.33v.
I cant find a fuse on the main board similar to how you mentioned, maybe Im looking in the wrong place??Comment
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Re: *Please help* GRUNDIG GULCD37HDIT wont turn on
check around the connectors,it will be a SMD on a mainboard
disconnect main board,jumper across 5v_stby to ps_on,do all other voltages turn up?,use a resistor to limit current,not sure if you have done this test with mainboard goneLast edited by multimeter; 01-19-2014, 11:43 AM.fixed so far...376 lg lcd tv's,24 onn tv;s,24 panasonic lcd,16 jvc lcd,12 marshall jcm800 amps,refurb of various disco equipment lighting,old style disco decks ,and a flymo!
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please let us know if everything works ok if your tv gets fixed, as it will be and aid for anyone else having the same problem and wishing to fix it.it would save people clogging up this site with topics that are duplicated,and can be found easily using the search function.,and taking up valuable space.enjoy your fixed tv!,hopefully!Comment
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Re: *Please help* GRUNDIG GULCD37HDIT wont turn on
thats ok dude,the pins to join are +5vstb and the one marked stby,but no mainboard connected,just want to confirm psu is actually working ,sorry its an ocd thing
fixed so far...376 lg lcd tv's,24 onn tv;s,24 panasonic lcd,16 jvc lcd,12 marshall jcm800 amps,refurb of various disco equipment lighting,old style disco decks ,and a flymo!
----------------------------------------------
please let us know if everything works ok if your tv gets fixed, as it will be and aid for anyone else having the same problem and wishing to fix it.it would save people clogging up this site with topics that are duplicated,and can be found easily using the search function.,and taking up valuable space.enjoy your fixed tv!,hopefully!Comment
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