LG 60PA6500 Plasma Mainboard

[maleksa]

I have 2 LG 60PA6500 Plasma TVs. One of them recently wont power on (wont even go into standby mode) and I managed to zero down the problem to the mainboard.

I checked the standby voltage going into the mainboard reads at 3.47v for both the good and the bad mainboards.

The Vin on IC600 for both boards read 3.47v. However, I note that the Vout on IC600 for the good mainboard reads 3.32v, but on the bad mainboard it reads 0.3v. I have attached a picture of one of the boards.

Would the problem on the bad mainboard be purely due to IC600 or can other defective component(s) cause the Vout on IC600 to read 0.3v? The markings on IC600 reads EF8, which I reckon is an AP2121N-3.3 voltage regulator.

Any help/pointers before I start ordering parts is truly much appreciated.

[tom66]

Re: LG 60PA6500 Plasma Mainboard

You could have a short circuit following the regulator. It may be worth removing that ferrite bead L406 and seeing if the 3.3V comes back. If so then there is a short after the regulator. It could be a bad ceramic cap or a shorted processor, or many other possible faults.

[maleksa]

Re: LG 60PA6500 Plasma Mainboard

You could have a short circuit following the regulator. It may be worth removing that ferrite bead L406 and seeing if the 3.3V comes back. If so then there is a short after the regulator. It could be a bad ceramic cap or a shorted processor, or many other possible faults.

Thanks for the pointer tom66. Will give it a try...

[shucl]

Re: LG 60PA6500 Plasma Mainboard

I have 2 LG 60PA6500 Plasma TVs. One of them recently wont power on (wont even go into standby mode) and I managed to zero down the problem to the mainboard.

I checked the standby voltage going into the mainboard reads at 3.47v for both the good and the bad mainboards.

The Vin on IC600 for both boards read 3.47v. However, I note that the Vout on IC600 for the good mainboard reads 3.32v, but on the bad mainboard it reads 0.3v. I have attached a picture of one of the boards.

Would the problem on the bad mainboard be purely due to IC600 or can other defective component(s) cause the Vout on IC600 to read 0.3v? The markings on IC600 reads EF8, which I reckon is an AP2121N-3.3 voltage regulator.

Any help/pointers before I start ordering parts is truly much appreciated.

I am having problem with MainBoard LG 60PA6500.ATS (Photo Attached) I could not find a replacement unit for the main board.

Do you know where can I buy the mainboard.

I manage to fine MainBoard 60PA6500-UG

Everything on the main board is the same, the part number is the same EAX64696604(1.1)

But 60PA6500-UG main board have a remote control in. (Attached photo)

My board 60PA6500.ATS do not have a remote control in. (Attached photo)

Kindly advice is both board compatible?

Thank you

[shucl]

Re: LG 60PA6500 Plasma Mainboard

Thanks for the pointer tom66. Will give it a try...

I am having problem with MainBoard LG 60PA6500.ATS (Photo Attached) I could not find a replacement unit for the main board.

Do you know where can I buy the mainboard.

I manage to fine MainBoard 60PA6500-UG

Everything on the main board is the same, the part number is the same EAX64696604(1.1)

But 60PA6500-UG main board have a remote control in. (Attached photo)

My board 60PA6500.ATS do not have a remote control in. (Attached photo)

Kindly advice are both board compatible?

Thank you

[Andrew F. Ali]

Re: LG 60PA6500 Plasma Mainboard

The EBT62146301 on the white sticker of the replacement Bd. is the No. you should be looking to match. Your original Bd does not seem to carry on the white sticker the EBT No.
If the price is reasonable I would give it a try since this is what is available.