I have used my sharp M4000 for 2 years, but couple days ago the cooling fan has some irregular noise especially when it is in low speed, it seems something stuck inside to prevent it to run smoothly. Anyone know what's the problem is? thanks.
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Yes it can be replaced and it has to be done with experience in soldering desoldering or the mobo will be junk. Splitting the cases is only a small part of the job if you have no experience in soldering methods. See if there is another way that you can charge the battery but I can not imagine it to be convienent
Unless the Unit can be cleaned ( you claim it cools?) but not enough. The age of the Unit is not in you Question, the amount of time you got for 100 bucks is pretty good being you purchased a USED UNIT. With the type of use you claim Running 24/7 and about 5 months of cooling - I'd say you never cleaned the Unit from day one - that might cost you about 100 bucks if the unit can be done in the yard by a serviceman. Chemicals can hurt the Unit if not done properly ( and yourself). It sounds to me like you use it for a Business - if so you can purchase one and write it off .
use canned air and blow every bit of dust out of every vent and hole. if you want to, you can remove the top (6 screws on the bottom, and the 2 top screws on the back) and blow dust out that way. i could also be a power supply problem. from excessive heat, the capacitors on the ps dry up and don't work as they should, causing shutdown.
remove the top (6 bottom screws, 4 back screws (not the one near the plug)). facing the front of the projector, the colorwheel is behind the front leveler foot and attached to the orange ribbon cable. you need to remove the lamp housing, the main board, the fan assembly between the lens and the power supply, and the lens assembly (optical engine). now remove the 2 silver screws holding the colorwheel assembly to the optical engine. that part number is for the wheel itself, so remove the 3 small screws to get it off. to install, repeat procedure. keep in mind which screws and which cables go where.