2x 2243NW screens faulty

[cmia]

Right guys,

Picked up two monitors from ebay at afew dollars each (1.7£)

The issue they have is when you apply power they power on and back off after afew seconds.

The LED on the front stays blue and if ou press the auto function you can see the menu really dark. So I decided it was the invertors that was causing the issue. I replaced the power invertors on the board and it has made no difference.

Will attach pictures in a minute. Thanks

[cmia]

Re: 2x 2243NW screens faulty

Please see pictures Help!

[Rtech]

Re: 2x 2243NW screens faulty

One of the pins on the primary side of T801 looks as though it has a dry joint,it needs re-soldering ?? I would then check the secondary resistance of both the Inverter transformers and advise.

[cmia]

Re: 2x 2243NW screens faulty

Hi,

I have not worked on electronics much, so pretty new!

The disconnected pin does not connect to anything.
it has no tracks.

Please see attached picture

[Rtech]

Re: 2x 2243NW screens faulty

and the resistance of the other transformer need to be within 3%(although could be SLIGHTLY more)of the one you have measured...if it is then it may well be the lamps or there wiring that is faulty.

[dj_ricoh]

Re: 2x 2243NW screens faulty

yeee, i`ll go for the lamp

[cmia]

Re: 2x 2243NW screens faulty

It has 2 connectors on each lamp
How do i test it.

can both lamps go faulty ?

thanks

[budm]

Re: 2x 2243NW screens faulty

Yes both lamps can go bad, bad wires. etc.
http://s807.photobucket.com/user/bud...?sort=3&page=1

To test the board, you will need test lamps.
http://s807.photobucket.com/user/bud...?sort=3&page=1

[cmia]

Re: 2x 2243NW screens faulty

Can I test the board with just one other CCLF lamp ?
Or do I need 4 of them ?

Where is the best place to get replacements ?

Thanks

[Rtech]

Re: 2x 2243NW screens faulty

It is easier if you have a set of 2,,,if you ever get to Harrogate I can give you a test pair.The cost of new ones in the UK is very expensive, and they are very easily broken if you have to replace them.You can make some alternative ones, have a look at budm's post above.