LG RZ-27LZ55 momentary backlight

[zx81]

Re: LG RZ-27LZ55 momentary backlight

Is it worth also checking the lamps at this point and make sure they are ok before dealing with the inverter board issues? and can this out of spec transformer account for the missing INV-BR voltage?

[zx81]

Re: LG RZ-27LZ55 momentary backlight

Managed to find this on ebay:

http://www.ebay.co.uk/itm/1309975428...%3AMEBIDX%3AIT

Is it worth trying to swap out the transformer ?

[Alastair E]

Re: LG RZ-27LZ55 momentary backlight

Err--Please don't take this the wrong way....

But--This set is ancient by flat-screen standards, hasn't even got Freeview in it as far as I know...
Ive one in the garage, 2 sec to black--I haven't and don't intend to do anything with it either!

Apart from the experience of the repair--Is It WORTH it???

[budm]

Re: LG RZ-27LZ55 momentary backlight

I would for another board to see how much it will be, from my experience, more transformers will go out later on, so if the replacement board has low price then you can keep the old board for spare transformers.
The BRI-INVR Voltage may be relate to the main board.

[zx81]

Re: LG RZ-27LZ55 momentary backlight

Err--Please don't take this the wrong way....

But--This set is ancient by flat-screen standards, hasn't even got Freeview in it as far as I know...
Ive one in the garage, 2 sec to black--I haven't and don't intend to do anything with it either!

Apart from the experience of the repair--Is It WORTH it???

100% for the experience.

[zx81]

Re: LG RZ-27LZ55 momentary backlight

I would for another board to see how much it will be, from my experience, more transformers will go out later on, so if the replacement board has low price then you can keep the old board for spare transformers.
The BRI-INVR Voltage may be relate to the main board.

Thanks Bud,

I will buy a board and see how it goes. There is one linked earlier in this thread thats about £10.

[Alastair E]

Re: LG RZ-27LZ55 momentary backlight

Fair enough--If you down this way anytime soon--you can have another!

[zx81]

Re: LG RZ-27LZ55 momentary backlight

Fair enough--If you down this way anytime soon--you can have another!

Thank you Alastair. I see your out in lovely Wales. I'm based in Birmingham will give you a shout if I ever come to that side of the World.

Just working on scrap TV's trying to learn as much as possible as quickly as possible Unfortunately at my tender age things don't sink in as they use to when I were a nipper

This particular set is my mums and was destine for the scrap heap but I thought I'd give it ago. Occasionally buy scrap TV's of ebay local pick up. Try and fix them usually end up giving them away. Its just a hobby and I just love the challenge of learning something new. The guys on here are great. It just amazes me how generous the techs are on here with their time. Very much appreciate the forum and the guys that help out here.

zx81

[budm]

Re: LG RZ-27LZ55 momentary backlight

"100% for the experience." Hands on experience is priceless, that is how you learn beside reading lots of books.

[zx81]

Re: LG RZ-27LZ55 momentary backlight

"100% for the experience." Hands on experience is priceless, that is how you learn beside reading lots of books.

I agree wholeheartedly.

I feel privileged to have access to the wealth of knowledge and experience of the guys helping out on here.

Thanks Guys.

[zx81]

Re: LG RZ-27LZ55 momentary backlight

Hi Guys,

The replacement inverter board arrived yesterday and it did the trick

I'd like to thank all of you for your help, especially Bud for helping get to the root of the problem.

Now I need to find something else to fix.

zx81.

[budm]

Re: LG RZ-27LZ55 momentary backlight

Thanks for the follow-up on the repair.

[dragometin]

Re: LG RZ-27LZ55 momentary backlight

Repaired one by replacing one transformer taken from a broken Toshiba TV. Same board.
Mesured resistance between pins 4 & 5 of the transformers and had one in open line (O.L). Replaced the transformer and it's working.