Trying to fix an LCD Monitor

M

MitchellLutzke

New Member
Hello, so I bought a Dell E248WFP 24" LCD monitor for $40 dollars. I knew that the backlight was out from what the guy I bought it from told me. I brought it home and powered it up. The right backlights flashes four times in probably a little over a second and then quits. The left backlights do nothing. While the right backlight is pulsing, it lights up enough that I can see my desktop background, so I know that works.

While it is flashing it makes this odd hissing sound. I would consider the hissing to be fairly loud, you could hear 10 feet away if you were listening for it. I was thinking maybe the inverter was dying, but now with the odd hissing I'm not so sure. The monitor will only flash the right backlights four times and then they will stop altogether. I was reading around a little and it sounds like the hissing could be a bad soldering point, what do you think I should look into?
 
Last edited:
Its not under warranty by chance is it? If you know what your doing, you can open it up and see if the problem is repairable without changing any parts. Chances are, if its not under warranty then its going to cost more for a repair than its worth.

But without taking it apart, there isn't much you can do.. it would be difficult to find the parts for that particular monitor for a quick fix. I'd call Dell and tell them what its doing, and they'll ask for the serial number.
 
No, it isn't under warrantee and I've already opened it up. The buzzing seems to be comming either from the inverter for the ccfl's or the actual ccfls themself on the right side, i'm not exactly sure. I don't see anything that immediately screams broken, nothing burned, no bulging caps.
 
I know you can buy inverters for laptops, see if you can find a model # on the inverter then search ebay. inverters are cheap, but if it ends up being the backlight in the lcd panel itself. You can fix it, though it would probably cost more than its worth.
 
I just want to make sure it's a problem with the inverter before I put any amount of money into the monitor. The hissing seems to be coming from one ccfl bulb. It seems that only 1 out of 6 bulbs is doing the 4-5 pulses before the safety thing kicks in and stops the backlight. If I unplug any of the six ccfl bulbs, the one that pulses will not kick in (just saying this incase it means something, it might just be meant to work like that)

if this problem were just the inverter, the ccfl bulb would not hiss, right? Well, I'll poke and prod it some more and see if I can find anything else out.

Oh, by the way, the inverter in it is called LOGAH MIT64001.51. I found a website that sells a LOGAH MIT64001.00 inverter for $90. The boards are almost absolutely similar except for a slight difference in style, but I'm thinking they should be compatible with each other.
 
You must log in or register to reply here.
Back
Top