I have a 3 year old Mitsubishi LCD Projection. I am seeing numerous small black specs and some bright white specs on the screen. I thought the black specs were bugs but I am not sure. These are random and clustered. I opened the unit up and checked and cleaned the front screen, the mirror, the bulb and dusted the lens. This does not seem to be the issue. Any suggestions?
SOURCE: Location of MIrrors in projection tv
wd-52525 This is a DLP, I dont suggest taking it apart to clean anything, this is what we call a MICRO display, the imaging device is about 1" square and blown up 50X to the size of the pix you watch, anytime anyone I know has taken stuff appart where the mirror is at has ended up worse off, you say that there is dust on the mirror, what does it look like in your picture? If the spots are quarter size or so and fuzzy edges the dust is inside the lightengine and you want a factory cleanroom to service the LE, the one thing I think you can safely do is pull the lamp and check for dust on it as it can cause issues in pix, other than that I dunno what to tell you, hope this info helps.
SOURCE: Mitsubishi WS-55819 power issue
This model is equipped with a self-diagnosis feature to help with diagnosis of shutdown problems. To activate this turn the unit on let it shutdown then press the input and menu buttons on the front panel simultaneously and hold them in for 5 seconds after 5 seconds the power LED on the front panel will blink a two digit sequence. This will be one set of blinks a short pause then another set of blinks, this will repeat 5 times. 1 - 2 = no error detected 2 - 1 = X-ray protect (high voltage or beam current) 2 - 2 = Short protect (short protect monitors low voltage supplies) 2 - 3 = Deflection protect (this could be loss of vertical or horizontal deflection) 2 - 4 = Vertical protect (usually loss of vertical from the source) 1. SHUTDOWN AT POWER WITH SELF DIAGNOSIS ERROR 2 2. CHECK FOR LEAKY C9A60 470 PF 1000 V PART # 154P400030, PARALLEL TO D9A57 ON THE POWER PCB (NOT SHOWN IN THE SCHEMATIC). 2. SHUTDOWN AT POWER WITH SELF DIAGNOSIS ERROR 2 2. CHECK FOR OPEN FUSES F9A04 AND F9A05 PART # 283P043090 ON THE +24 AND -24 VOLT LINES. IF THE FUSES ARE OPEN THE CONVERGENCE OUTPUT CIRCUIT WOULD BE SUSPECT. 3. SELF-DIAGNOSIS INDICATES SHORT PROTECT. CHECK FOR A SHORTED IC4B01 PART # 270P261020 (VERTICAL OUTPUT) LOADING 24-VOLT SUPPLY LINE. LOCATED ON THE MAIN PCB
SOURCE: black spot on screen
And yes, you are right. It is the light engine causing it. And unfortunatley you need to have your light engine replaced also. I've replaced several of them for that same reason. So I know what I'm talking about.
C-Dog
SOURCE: Dark picture problem
did you change the lamp with an original or bulb only - mitsubishi only sells the lamp and housing!!!
never use generic
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