Spotty Projector display - DMD Issue

[TLARWise]

I have a couple of 7 year old Casio XJ-M140 projectors that have the white spots faulty DMD chip issue. I am happy to have a go at replacing this myself but does anyone know of any UK based suppliers of projector DMD chips that I can contact for pricing?

[synaesthesia]

Ebay will be your best bet but considering the cost (circa £100-£150) I'd strongly consider replacing the projector.

[MrBrow]

Spotted this issue on many of my original A-series and now the M-series. Expected better from Casio and reluctant to purchase again. 20,000hrs life-span assuming you don't mind the snow storm on screen!

[mikeprice]

I always found that by the time the spots appear the lamp will be getting oldish. Obviously no teacher will ever use the eco mode so I used the other hour figures that were hidden in the manual. Based on this is was more economic to buy a new projector - which also meant all the inside were pristine - and the new projector may also have useful feature etc.

[MrBrow]

I always found that by the time the spots appear the lamp will be getting oldish. Obviously no teacher will ever use the eco mode so I used the other hour figures that were hidden in the manual. Based on this is was more economic to buy a new projector - which also meant all the inside were pristine - and the new projector may also have useful feature etc.

 

 

Ohhh, whats the hidden hours? New to me!

[mikeprice]

Ohhh, whats the hidden hours? New to me!

 

Well - not always so hidden - but certainly not the headlines

The normal spec is x millions house before the bulb goes bang - but this is based on the projector being set to specific setting which reduce the brightness quite a lot. Cue teachers moaning that it isn't bright enough, so you have to change the setting.

 

Somewhere in the documentation there is often a figure for number of hours if set to a normal brightness - often far less. This is normally hidden in the manual behind a locked door marked 'beware of the leopard'. If the projector is getting dodgy I used this figure and estimate the number of hours currently on the bulb (or maybe trust the figure from the config menus if I can). I then work out the fraction of the total available hours left - and this often comes to having only 10% ish so I use the full cost of a bulb in working out whether or not to replca ethe whole projector or get it repaired

[MrBrow]

I see - kind of obvious now I think of it