Question about Optoma EP755 Multimedia Projector

1 Answer

Lamp has stopped working.

Lamp has failed. I have heard that it may be a life time setting rather than a simple failure. Is it possible to reset and get more life out of it? If so how?

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  • will591 Nov 18, 2009

    About 1000 hours. Projector is in a fixed position for church services.

  • will591 Nov 18, 2009

    Thanks, I'll take a look at the lamp and that might confirm a broken fillament.
    I assume from the current lack of comment that there isn't a 'software' reset option.

  • will591 Nov 18, 2009

    Thank you anyway, at least I can buy a new lamp knowing there was nothing else I could do.

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  • 691 Answers

Hi there,

thank you for using FixYa.

How many hours has the lamp done?

They are generally only good for 2000 hours, when hot do not touch, move the unit ect as this can damage the lamp. Never touch the glass part of the lamp (it is not like a light bulb).

Regards
Richard Scott
Technical Support

Posted on Nov 18, 2009

  • 1 more comment 
  • Richard  Scott
    Richard Scott Nov 18, 2009

    Hi there,

    thank you for using FixYa.

    ok, the table may of been bumped,

    but if you take out the lamp and check the fillament closly, is there a break in it?

    Also was there a power surge to cause the the lamp to go?
    Also if the unit gets very hot, this can cause the lamp to go faster - make sure plenty of space around it all for the air vents

    Regards
    Richard Scott
    Technical Support



  • Richard  Scott
    Richard Scott Nov 18, 2009

    sorry no reset for the lamp



  • Richard  Scott
    Richard Scott Nov 18, 2009

    no worries

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When i turn on my tv it tries to boot, blue mitsubishi home screen come up, i hear fan then it all shuts off while green light blinks.


Try a reset. Start by unplugging for 1 minute, then plug back in & if still won't restart try the following. If none of the following work, you will need a technician.

Initializing the TV in many cases can remedy a problem.
In the 2006 product line Initialization is now a user function.
Pressing the front panel "INPUT' and "FORMAT"
buttons at the same time activates Initialization. When
complete all user settings will have to be set again. The
table in Figure 4-3 list the User Initialization procedures.
Note: Pressing INPUT and FORMAT is the same as
the Initialization in the Option Menu (MENU-2-4-7-0)
Order Name Procedure Results Notes
1 System Reset Press <System Reset>
on Front Panel
Hardware & TV operating
software reset.
POWER/Timer LED flashes for 60
seconds. No customer settings
are changed.
2 User Initialization
Press <INPUT> &
<FORMAT> on Front
Panel at the same time.
All customer Audio &
Video settings are reset to
factory default.
All customer settings will need to
re-configured.
3 Reset System
Defaults
From the remote, press
<MENU> <1-2-3>
<ENTER>
All customer settings
except V-Chip are reset to
factory default.
Netcommand, Channel Memory,
etc., will need to be re-configured.
SERVICER
PROCEDURE 4 Initialization
From the remote, press
<MENU> <2-4-7-0>*
select "INITIAL" press
<ENTER>
All customer settings are
reset to factory default.
All customer settings will need to
re-configured.
MITSUBISHI RESET / INITIALIZATION CHART
CUSTOMER
PROCEDURES
Figure 4-3
Figure 4-4
LED Indications
The front panel LEDs, refer to Figure 4-4, also assist in
determining the cause of a symptom. Figure 4-5 illustrates
normal LED operation. Figure 4-6 shows the
LEDs response when a problem is detected and indicates
the possible cause.
Power/Timer
Indicator
Status
Indicator
Lamp
Indicator Condition
Off Off Off Off (standby)
Blinking green
fast Off Off Initialization (10 - 65 seconds)
Off Off Blinking
green fast Lamp runs for 1 min after PTV off
Green Off Off Power On
Blinking green Off Off Power On Timer is set
NORMAL LED INDICATIONS
Power LED Status LED Lamp LED Condition
High Temperature - check ventilation air flow.
(Temperature sensor is disconnected.)
Off Off Blinking yellow Lamp cover is open.
Lamp failure (Lamp fails to turn on)
Off Off Red (Lamp turns off after lighting)
Lamp is broken
Off Blinking Red Off Fan Stop
Off Red. Off Circuit failure. (Run Error Code Check)

Apr 08, 2015 | Mitsubishi WD-65731 65-Inch 1080p DLP HDTV

1 Answer

Replaced lamp broke in Sony KDS-R50XBR1 50" HDTV after 2 minutes


When you say "lamp broke", do you mean the lamp actually physically broke? (as in 'exploded'?)

Was it a Factory replacement bulb, manufactured by Sony? (did it have the Sony logo on the box?) Many "3rd party" lamps are made from inferior materials, made in inferior conditions... and produce inferior results... including what you've mentioned. If this is the case, I suggest getting a replacement, or better a refund, then get a real Sony lamp... personal experience speaking here.

Normal failure mode of the ballast is that it will usually be totally dead, probably 85% of the time. Sometimes you will see one that's struggling to output enough power to maintain proper brightness.

What you describe would be a VERY rare failure, indeed. The ballast can not really burn out the lamp, by design. It's possible the ballast could have been weak, and just now failed... if the lamp still looks to be in good physical condition, this is a possibility, though remote.

BTW... 6 years is pretty good, but it's more about operational hours. I believe those low power lamps should last 5,000 to 8,000 hours, for an original Sony lamp.

Another thing to keep in mind is the lamp cooling. If the fan that cools the lamp has failed, and for some reason the detection circuitry is not realizing that... this could be a problem. These arc lamps operate at about 1200 degrees F (internally), and require a lot of cool air to keep them from literally melting, or exploding.

Nov 06, 2013 | Sony KDS-R50XBR1 50" HDTV

1 Answer

My television stays on for about 2 mins thens shuts off


Possible:

Lamp about to fail (too dim and set will shut down).

Lamp Ballast failing (it drives the lamp)

Color wheel issue (usually there will be a high pitched or fan like sound heard but not always)---if wheel turns too slow set will detect that and turn lamp and set off.

May 16, 2012 | Samsung HL-R5078W 50" HDTV

1 Answer

No picture no sound lamp light and standy / temp light flashing


Two things to look at---------the lamp to see if shattered inside AND with it removed look where it faces at the color wheel--see attached photo.

Look to see if any segments are broken, missing etc. Many of the wheels fail in this way and some will have a high pitched or even fan like sound before they fail.

Some when really bad will make a grinding noise also. The set monitors the speed of the wheel and if it slows or stops the set will almost instantly turn the lamp off(if possible watch from area where lamp is to see if at turn on to see if it for a moment lights or not.


5_5_2012_5_26_47_pm.jpg

May 05, 2012 | Samsung HLR5067WX 50" Rear Projection HDTV

1 Answer

The lamp does not turn on at the first and at the second attempt. When we power on the projector, the lamp does not enlighten, instead, after 5 minutes, the POWER LED and the LAMP LED go red. We have to...


One possibility is a failing capacitor in the power supply. "Difficult power on" is a common symptom in many electronic devices; even dishwashers with electronic controls, and is a precursor to complete failure. A visual inspection of the power supply unit may reveal one or more electrolytic capacitors with a domed top, and possibly leakage out of the top. (See the photo at the bottom for a comparison of bad electrolytic capacitors with good ones. The good capacitor on the right has a flat top.) Replacement capacitors for low voltage circuitry usually cost less than $1.50, but there will be some labor involved in getting the power supply out for repair. (I use Panasonic FR series capacitors for these replacements because they have a long life and greater ripple current rating than most original parts.)

Did you reset the lamp hour timer when you changed the lamp? If not, you may have run it up against the limit (it thinks you never changed the lamp) and it's locked out the projector as a safety measure because lamps beyond their rated life are prone to explode. Four attempts to light up the projector after the end-of-life limit on the lamp will lock it out.

There is a procedure on page 68 of the owner's manual for resetting the lamp hour timer. You will have to estimate the time already used on the new lamp, subtract that from the maximum time permitted, then keep track of the time so you don't risk a messy explosion (glass and mercury vapor clean-up).

For your convenience, I've included a link for the manual (Adobe Reader or other PDF viewer plug-in required).

http://www.sharp-world.com/products/data_projector/xgmb70x/pdf/mb70_e.pdf
badcap-xchqmels3ttncnf0w323vjra-1-0.jpeg

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1 Answer

I replaced a lamp on a Zenith Projection LCD TV model # D52wlcd. The new bulb is working fine. However, the end of bulb life indicator light ( orange ) would not go off. Any advise on how to reset the...


Resetting the lamp time
After pressing the "?" key on the remote control in Stand-By mode, press the "9876"
and press the "OK" button.
And then three LED in the front is stop after flashing for a moment.* Lamp Life Time Confirmation
1. Method1 : Enter ADJ mode with using the remote control. You can be confirmed
because " Lamp Life Time XX hr" is appeared.
2. Method2 : With using the remote control offered to consumer if you press the
menu button continuously, OSD menus will disappear then press the "9876" and
press the "OK" button to enter ADJ mode you can see "Lamp Life Time XX hr"

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2 Answers

Reset change oil light


hello, here is the instructions on how to reset the light

When the system has calculated that oil life has been diminished, it will indicate that an oil change is necessary. A CHANGE ENGINE OIL SOON message will come on. Change the engine oil as soon as possible within the next 600 miles (1000 km). It is possible that, if driving under the best conditions, the oil life may not indicate that an oil change is necessary for over a year. However, the engine oil and filter must be changed at least once a year and at this time the system must be reset.
If the system is ever reset accidentally, change the engine oil at 3000 miles (5000 km) since last oil change.
To reset the Engine Oil Life System, do the following:
  1. Turn the ignition to ON, with the engine off.
  2. Slowly fully press and release the accelerator pedal 3 times within 5 seconds.
  3. The reset is complete when the chimes sound and the CHANGE OIL lamp goes out. If the lamp stays on and no chime is heard, repeat the reset procedure.
  4. Turn the key to OFF.
If the CHANGE OIL lamp comes back on when the vehicle is started, the engine oil life system has not reset. Repeat the procedure.

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2 Answers

If my samsung dLp HLM 507,has no lights,no power& the lamp is tight in the socket.Could it possibly be the BP-96 lamp? I've heard there's some sign of life when the lamp is bad.this set's dead


90% of the time the lamp is bad when the lamp is bad a lot of the time you will here a buzz sound by the lamp its trying to trun on the lamp but cant. also look at the flashing lites on the front of the tv it should give you code

Dec 08, 2009 | Samsung HLN5065W 50" Rear Projection...

2 Answers

What is the lamp life on a sanyo plv-z2 bulb and how to read the bulb life there are 3 numbers that come up when i check it


If I remember correctly, you hold down either the power or the menu button for 30 seconds... I believe it is the power button, and it will briefly display it on the screen, but this assumes it was reset at the time the lamp was installed. The counter counts up on this model, and the lamp replace light will come on at 3000 hours. I have 2 of these units, and I have gotten at least 5000 hours out of each lamp. Toward the end of the lamp life, it may start getting dim and/or have difficulty starting, but I probably wouldn't replace it until you either notice the dimming or the lamp fails, although I've heard some say they can damage the projector when they fail, I have not had any problems.

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2 Answers

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there isn't one. you need to see the menu. but what color is the led and is it blinking?
green- all is well
red blinking:
1 time- lamp not striking after 5x.
2 times- lamp has more than 3000 hrs. replace lamp.
3 times- lamp failure. replace lamp.
4 times- fan failure. shuts down.
5 times- undiagnosed error. possibly ballast or colorwheel.

if the colorwheel won't spin, the lamp won't light. when you turn on the projector, do you hear a high-pitched whir? if not, the colorwheel needs replacing.

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