LCD corner getting HOT and Black

[TheGeekFreek]

Ok, so im at work, working on a customers Dell D800.. First diagnosed with a bad inverter because the screen was very dim, so I replaced the inverter and now the screen lights up fine but the bottom right corner gets EXTREMELY hot.. It gets hot over the period of about 4 minutes getting increasingly hotter by the second.. The area around the corner begin to get dark and then it begins to black out a small section of the LCD there.. I haven't let it grow more than a mm or so.. But is this now a backlight issue?

 

[compslckr]

I had the same thing happen on an inspiron 1100 and I ended up replacing the whole lcd unit since they were cheap on ebay for that model since it was older.

 

[TheGeekFreek]

it would cost em about 450$ for us to replace the whole LCD panel, his bill sits about 150$ as is, but were not sure wether we should try to send back the inverter or just order a backlight to finish the job..

Suggestions?
Stories?
Tests?
Solutions?

 

[jerb]

if you can, return that inverter. you'll probably face a restocking fee.

as far as the screen goes, thats an odd place for a blackening to occur as its not near any normal source of heat. if you had a short in one of your CCFL tubes that could explain both the heat and the dimness. replacement tubes should be anywhere from $6 to $20 and you'll need 1 or 2 depending on the model

I've never seen anything like what you describe but that would be my best guess for a fix

Edit: as far as tests go, take out that tube and look for any blackening / melting of at the end of it. examine the wire sleeving which is usually PVC and will melt at the temps your describing for any disfiguration