LG 70UH6350 (UB.BUSMLJr)

[nonsub]

Re: LG 70UH6350 (UB.BUSMLJr)

So if I am reading right then P803 anodes are joined pin 7+8 right?

Oh nvm I see the trace connects big

[Diah]

Re: LG 70UH6350 (UB.BUSMLJr)

yes.. P801 / P802 ( 1+2) P803 (7+8) all are one line... si just plug the BL socket in place and take any one of ÖED+ as probe and messure against other VC 1-12

[nonsub]

Re: LG 70UH6350 (UB.BUSMLJr)

they look all 3 sockets led+ are connected together
if this case then take one as anode probe and measure all other vc .. write down the result

OK sorry Vc = Voltage Cathode yes (-)

I am doing this with BL forced on yes (I guess no other option would make sense lol.) Also mobo disconnected?

[Diah]

Re: LG 70UH6350 (UB.BUSMLJr)

So if I am reading right then P803 anodes are joined pin 7+8 right?

lol yes my typo... correct 7-8... there are no 9 at all

[Diah]

Re: LG 70UH6350 (UB.BUSMLJr)

the VC 1 to 12 you can use this hols to measure.. more easy than the socket

[nonsub]

Re: LG 70UH6350 (UB.BUSMLJr)

the VC 1 to 12 you can use this hols to measure.. more easy than the socket

I was hoping we would find a problem here but all 12 are 96.1V and 97.1V

[Diah]

Re: LG 70UH6350 (UB.BUSMLJr)

I was hoping we would find a problem here but all 12 are 96.1V and 97.1V

do it again.. now with ref. TV chassis

[nonsub]

Re: LG 70UH6350 (UB.BUSMLJr)

do it again.. now with ref. TV chassis

Sorry just LED+ to chassis so only one reading right?

[Diah]

Re: LG 70UH6350 (UB.BUSMLJr)

black probe on chassis.. and red on vc 1 to 12

[nonsub]

Re: LG 70UH6350 (UB.BUSMLJr)

black probe on chassis.. and red on vc 1 to 12

ok just to be clear previously I did red on LED+ and black on 1-12.

also incase needed red to LED+ and black to chassis = ~98V

[Diah]

Re: LG 70UH6350 (UB.BUSMLJr)

just do this please ..... black probe on chassis.. and red on vc 1 to 12

[nonsub]

Re: LG 70UH6350 (UB.BUSMLJr)

just do this please ..... black probe on chassis.. and red on vc 1 to 12

all between 1V an 2V.

[Diah]

Re: LG 70UH6350 (UB.BUSMLJr)

????? are you sure... check again

[nonsub]

Re: LG 70UH6350 (UB.BUSMLJr)

????? are you sure... check again

Voltage jumps around a lot 0.99V - 2V.

OK will do again now.

[nonsub]

Re: LG 70UH6350 (UB.BUSMLJr)

Voltage jumps around a lot 0.99V - 2V.

OK will do again now.

They all settle around 1.4V - 1.7V it seems but Vc_8 bounces up to a peak of 2.2V and settles around 1.9V-2V

[Diah]

Re: LG 70UH6350 (UB.BUSMLJr)

yours DMM set on DC right... and level 100V DC correct.. if yes,,

you need to do this test again.. after setting the probe.. you turn on the PWB.. and ckeck the high and low... see if only VC8 play crazy reading

[nonsub]

Re: LG 70UH6350 (UB.BUSMLJr)

yours DMM set on DC right... and level 100V DC correct.. if yes,,

you need to do this test again.. after setting the probe.. you turn on the PWB.. and ckeck the high and low... see if only VC8 play crazy reading

DMM is auto-ranging (not sure if can disable)

Sorry power is on the whole time with black to chassis. Then I probe each of 12. Am I doing this wrong?

[Diah]

Re: LG 70UH6350 (UB.BUSMLJr)

DMM is auto-ranging (not sure if can disable)

Sorry power is on the whole time with black to chassis. Then I probe each of 12. Am I doing this wrong?

no this wrong, need to each time after set the probe on vc power up the PWB and remark the high and low

[nonsub]

Re: LG 70UH6350 (UB.BUSMLJr)

OK sorry so set to 100V range lol.

All are 1.1V-1.6V but VC8 1.9V-2.0V

[Diah]

Re: LG 70UH6350 (UB.BUSMLJr)

?? dont hurry.. read my last post