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Monitor Problem


photosceneross
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Good Morning All.

Yet another issue with our dks 1550.  This time it is our monitor.  Just before christmas, all of a sudden our monitor died, Just went completely black.  We managed to replace it with a refurbed one and it all worked fine, unfortunately this problem has now happened again.  It began by not working at all, i shut down the machine and restarted it, the monitor worked fine whilst booting up, got all the way up to loading the actually photomachine software, 100%, then it went black again.  Restarted again and it didnt work at all.

I tried using a different cable with this monitor unfortunatly it didnt solve the problem, we are currently just using a normal monitor (an old cheap one just lieing around).  Does anyone know what this issue could be?  Is it worth replacing/fixing? or should we just buy a better normal non touch-screen monitor.

Thank you for your time

Ross

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Check if you have 12V on power supply for monitor.

If not change it by some universal Notebook power supply which have 12V/2A (or 4A, I do not remember now, check what is written on original PS)  ;)

If you have that 12V then give this LCD monitor to some TV repair shop, it should not be too expensive, I was charged about 30-40€ for repair  :)

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I confirm, just cut out the straps ant trash your old monitor power supply - buy new one 12V 4A, anything you buy with the same plug - will fit.

And give both monitors for repair - you can sell one and you maybe you will decrease your losts in this topic...

Basically i would try to repair it myself - at the back on the power line there is huge electrolytic capacitor 10000uF/25V. Usually when power supply is going wild such capacitors are on the first line to damage - they are "getting pumped", breaking off loosing electrolytes. change this one.

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Thank you both for your help, currently put this problem on the bottom of the pile though.  Another problem this morning.  Waste leaked out of the bottom of the machine, fried the epson scanner power supply.  Now the machine keeps trip the fuse switch.  It seems to boot up fine untill it loads the actual photo machine software, as soon as it gets to 100% and starts making loud noises, its trips the switch again.

dont know what to do...............?

Ross

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Just to let you know, managed to get the machine working.  It would appear that when the waste leaked, it managed to make its way down on to the wires connecting the pumps at the bottom back part of the machine, i used a hot air gun to dry them, and it seems to be working now (fingers crossed).  Also managed to get the monitor working.  It wasnt off it was just really really dark, used the four little buttons on the back to do "auto-adjust" and this has corrected the problem.  Strange why it would do this in the first place.  Thank you Pskaro and Relaxia for your time and help.

Kind Regards

Ross

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photosceneross - wastes are agressive to the metal parts. U need to clean them otherwise everything on the electrical connection get rust and you will risk a fire in the longer period of time - or machine failure in the best scenario.

U need to switch it off and clean the electrical connections with pure alkohol, izopropylic acohol, denatured alcohol or anything, u cant leave connectors like it is right now.

And off course ... U need to find leakage and seal it :)

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Probably there was not leakage at all, waste tanks was full (bleach is the first to fill up), but probably that waste sensor is not working, which is common problem with that sensor type from KIS.

If that was the scenario, I would recomend to test all of the waste sensors and at least put the working sensor on the bleach waste tank. You can also use the water tank sensor, it is the same type.

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Yes it was a case of the waste tank being full.  Will check out the sensors as soon as possible, because the alarm doesn't go off anymore, for the time being we will just empty the waste a couple of times a day.

Monitor is broken again, when you turn it on it works for about 3 seconds flicker and then turns off.  Have brought a new power supply but the same problem, and also the local computer shop said they do not want to take on the job of fixing it....

Now we have an issue, where it says the lamp is burnt out, even though it isnt.  Have tried changing both lamps multiple times with no luck.

Any ideas?

Such a nightmare at the moment, seems to just be one problem after another.

Ross

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and also the local computer shop said they do not want to take on the job of fixing it....

It is a job for TV repair shop, not for local computer shop  ;)

Now we have an issue, where it says the lamp is burnt out, even though it isnt.  Have tried changing both lamps multiple times with no luck.

Any ideas?

For the problem like that with the lamp, check this thread: http://www.minilabhelp.com/forum/Blah.pl?m-1337790405/

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Unfortuantely all of my local tv repair shops, really dont want to look at the monitor, the only place which will even consider it want an £80.00 deposit, just to look at it!   Relaxia i changed the capacitor for a brand new one, but the problem is still there............ if i turn the brightness of the monitor down it stays on for a lot longer but does eventually shut itself off after about 45 seconds.  Any ideas guys? or is it time to give up?

Ross

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Damm... I have 3 LCD displays for KIS anf good opportunity to check them... but you're to far away ... :(

Did you already change power supply for the monitor ??

if yes - taking a look on the display - I think you can give up. For further diagnostics you would have to remove the touchscreen which is sticked to the LCD display - then unscrew 4 screws and take oud LCD form housing, only to get access to LCD's boards. Due the fact all are built in SMT technology - if cap is not "pumped" or blown you will not be able to recognize the fault. under the LCD there is one small PCB powering the touchscreen (don't remember, through touchscreen LCD as well), it also has with electrolytic capacitors - this is potential problem source as well. if they are OK - nothing more i could imagine to help you.

Remove your display, buy a standard 15" monitor (should be cheap now) and place it instead your current display - or place it on the Imagus scanner, similary to the DKS1510 . You will loose touchscreen functionalities but machine could be operational. One client of mine did that with own DKS1530 - it was easier since 1530 didn't have touchscreen :P

damm .. sorry - missed first post - you already have this :P

hmm...it would be interesting to take a look o the dead display :) I agree that this is not worth 80 GPB ...there are no electronic skilled people from Poland in the neighborhood ?? :P:P

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Unfortuantely all of my local tv repair shops, really dont want to look at the monitor, the only place which will even consider it want an £80.00 deposit, just to look at it!   Relaxia i changed the capacitor for a brand new one, but the problem is still there............ if i turn the brightness of the monitor down it stays on for a lot longer but does eventually shut itself off after about 45 seconds.  Any ideas guys? or is it time to give up?

Ross

You are in the bad situation, try to contact somebody in your country who can do this kind off the repair and send him the monitor by post.

Few days ago I brought one DKS2 monitor to our local TV repair shop and it was repaired the day after with the price tag off 47€  8)

This is not the first time that this TV repair shop is doing that for us, and if I remember correctly, there is the problem with power supply for the CCFL lamps which are used as back illuminating source for the LCD matrix. The new LCD monitors and TV are using now the LED as a light source by the way  ;)

He was also repairing for us in the past motor driving power supply on the tank PCB for the DKS3, but also some other boards from different minilab brands, and the price tag was never more than 50€ if I remember correctly :)

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Electronics generally is cheap. Very cheap. Its the knowledga and skills which are the most important here. It costs but this workshop... people think that they have trapped a duck with golden eggs, problem is that lot of customers can't afford the golden eggs.

photosceneross - dunno where are U from, but keep looking and asking for private people.

On th street U can find skilled car maniacs working around their cars which can cause your car will fly like street jet or can simply change used breaks or fix suspension for a pennies - but U'll not find the electronicians like this. keep asking. check local announses in daily journals or weekly periodics. Remember i said repair is tricky here since U have touchscreen

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