lg 32lc2d no picture

[terry681]

i have a 32 lcd tv as i was given it and as usall i had the idea the caps on the psu board had gone and sure enough c208 was bulging and L201 was stuck to that cap slightly melted and so from reading other posts i went ahead and replaced all the caps except for these the big middle one c150,c500,c501,c502.
the symtoms are green led on set flashes 6 times tv lights up showing av1 then changes to no signal and the screen lights up as i can see it from the back of the set lit up.
ive olso noticed that 3 red smd led light up on the main board.
i hear olso the set clicking 3 times on start up from the relay i hope i have explained this right as im not a tv repaire guy just a tinkerer and messing about with the tv past my time .
so any help would be great from ppl that are more clued up that me in fixing these type of lcd tv.
and if i could olso ask when i want to check voltage at the psu for voltage using a dmm where should i be placing the probes when checking the p203,p202,p201.
and i know that a few may say if not sure in checking voltage get a pro but its somthing for me to do and if i can get it up and running then ill be well pleased but if not then so be it and great site and a big thank you to all the ppl that make this a cracking site .oops ill post pics when i work out how to sorry for not getting them up.

[PlainBill]

Re: lg 32lc2d no picture

i have a 32 lcd tv as i was given it and as usall i had the idea the caps on the psu board had gone and sure enough c208 was bulging and L201 was stuck to that cap slightly melted and so from reading other posts i went ahead and replaced all the caps except for these the big middle one c150,c500,c501,c502.
the symtoms are green led on set flashes 6 times tv lights up showing av1 then changes to no signal and the screen lights up as i can see it from the back of the set lit up.
ive olso noticed that 3 red smd led light up on the main board.
i hear olso the set clicking 3 times on start up from the relay i hope i have explained this right as im not a tv repaire guy just a tinkerer and messing about with the tv past my time .
so any help would be great from ppl that are more clued up that me in fixing these type of lcd tv.
and if i could olso ask when i want to check voltage at the psu for voltage using a dmm where should i be placing the probes when checking the p203,p202,p201.
and i know that a few may say if not sure in checking voltage get a pro but its somthing for me to do and if i can get it up and running then ill be well pleased but if not then so be it and great site and a big thank you to all the ppl that make this a cracking site .oops ill post pics when i work out how to sorry for not getting them up.

Note links to taking pictures in my signature. There is a maximum size of 2000 x 2000 pixels. Use 'Manage Attachments' below the text entry area to attach pictures.

My question is "What happens if you hook a signal source to AV1?"

PlainBill

[terry681]

Re: lg 32lc2d no picture

and olso sorry should have stated the controls on the tv dont fuction and the remote is the same.

[terry681]

Re: lg 32lc2d no picture

could some one tell me how many smd red led are on the main board of the 32lc2d the middle one.
as i can see one light up when in stand by but when tv is turned on 2 other led come on the thing is ive noticed what looks like another led up at the left hand top corner as this fails to light up could this be bad and give the symtoms im getting i done more volt testing does it look the right voltages for these p connectors etc p102 p103.
these are on the main board these results.
cn500 connector
1.3.3v=1.09v
2.3.3v=1.09v
3.6.05v
4.6.05v
5.11.68v
6.11.68v

p500
1.5.11v
2.3.18v
3.5.06v
4.4.86v
5.this pin drops its voltage (err)
6.0.45v
6.5.06v
7.2.01v

p1311
1.led g. 0 v
2.led r. 2.82v
3.5.00v
4.4.97v
5.3.34v
6.3.35v
power supply volts
p202
1.19.20v
2.19.20v
3.6.06v
4.1.09v
5.11.71v

p203
1.1.09v
2.1.09v
3.6.05v
4.11.69v
5.11.69v

as im starting to think maybe the main board has went bad or im way off the base thanks all for looking.

[terry681]

Re: lg 32lc2d no picture

a wee pic of the 3 red led on the main board. just need to find the correct manuel for this tv, main board it states its a ld61 iv been reading a ld51 manuel think it is and couldint find this small led on the parts page and the schematic what a plum i am ehh well still learning and again cheers for looking at my issue.

[terry681]

Re: lg 32lc2d no picture

a wee pic of the 3 red led on the main board. just need to find the correct manuel for this tv, main board it states its a ld61 iv been reading a ld51 manuel think it is and couldint find this small led on the parts page and the schematic what a plum i am ehh well still learning and again cheers for looking at my issue.

its actually 2 led that fail to light up i think they should light up.

[terry681]

Re: lg 32lc2d no picture

been messing around with the set and found that i get 0.00 at both ends of smd resistor
r304 with the marking on it 000 and Q301=3.26 and 3.29. and led 300 =0.38 and 0.25-26
should i be seeing a voltage from this resistor i think so but im new to electronics and still learning .

[terry681]

Re: lg 32lc2d no picture

well still no reply any way got it sorted myself well netdent made a suggestian av board
well sir u was right a 3 pin diode on the solder side of the av board next to jk 100 or its jk101 the scart connection pin 16 cheers any way all.