Mulja tv repair portal

Equipment Repairs => LCD TV forum => Topic started by: netdent on November 04, 2012,06:26:30

Title: Medion MD 20165 Monitor backlight fault
Post by: netdent on November 04, 2012,06:26:30

Hi Looking for some help advice, I have a Medion MD20165 pc monitor that has a problem with the backlight, it comes on at first but will go out after a few mins! putting on and off again restores it again for varying amounts of time but mostly goes off after 2 to 5 minutes, was just going to replace the psu but having problems finding one, closest I got was this on-

http://www.ebay.co.uk/itm/1210047821...84.m1423.l2649

Which is almost identical but the numbers don't match up, any help would be most welcome, will post some pics of the psu/invertor

Title: Re: Medion MD 20165 Monitor backlight fault
Post by: netdent on November 05, 2012,10:56:24

Small update, in desperation I replaced some of the caps this made no diffrence BUT! if I go into the menu and select eco mode which reduces brightness it will work longer and instead of going black it constantly flickers the backlight? might not help much but maybe..........

Ronnie :dubbio:

Title: Re: Medion MD 20165 Monitor backlight fault
Post by: EuroSX4 on November 05, 2012,11:00:39

Im no expert but maybe the inverter for the backlighting is the issue??

Title: Re: Medion MD 20165 Monitor backlight fault
Post by: netdent on November 05, 2012,11:08:53

Quote from: EuroSX4 on November 05, 2012,11:00:39

Im no expert but maybe the inverter for the backlighting is the issue??

Any input welcome. thankyou, yes could well be, maybe just need to bite the bullet and buy another psu!

Ronnie

Title: Re: Medion MD 20165 Monitor backlight fault
Post by: coxtel1981 on November 05, 2012,11:49:29

Are electronic repair shops in england?   :93:

Title: Re: Medion MD 20165 Monitor backlight fault
Post by: netdent on November 05, 2012,12:12:44

Quote from: coxtel1981 on November 05, 2012,11:49:29

Are electronic repair shops in england?   :93:

I'm in Scotland but yes there are plenty but probably too costly, I would never use one, would rather repair myself when possible

Title: Re: Medion MD 20165 Monitor backlight fault
Post by: Turnip on November 06, 2012,12:40:45

Hi netdent,

Could be a backlight tube problem - fairly common with 16:9 monitors. Tube tester would be useful, and can be knocked up using a scrap single output 12v inverter where built-in sensing will cut on duff tubes.

Good luck - Chris.

Title: Re: Medion MD 20165 Monitor backlight fault
Post by: netdent on November 06, 2012,13:17:39

Quote from: Turnip on November 06, 2012,12:40:45

Hi netdent,

Could be a backlight tube problem - fairly common with 16:9 monitors. Tube tester would be useful, and can be knocked up using a scrap single output 12v inverter where built-in sensing will cut on duff tubes.

Good luck - Chris.

Hi Chris,

Thanks, this thing is low low miles... and now it has settled down! been on for 4 hours no fault, will soak it for a few days dee what happens?

this looks good for the money?

http://www.ebay.com/itm/Universal-CC...item41606f799e

cheers Ronnie

Title: Re: Medion MD 20165 Monitor backlight fault
Post by: Turnip on November 07, 2012,11:23:26

Hi Ronnie,

Link seems to have been deleted. Recall there was one on offer cheaply from a well known company - ran only on 5v and had no tube feedback to cut on duff tubes.

Bought one - total rubbish - Chris.