Question about Toshiba TDP-T3 Multimedia Projector

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Toshiba tdp-s3 projector

Amp runs fine, replaced lamp last year, was using, went back to it and was dark tried the old lamp, but still no light. red led flashing, reset lclock, flashed green, but still did not light

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  • air_chavez Mar 17, 2009

    I have the exact same problem. When you power it up the led light will flash green and you can hear it try to power up the bulb but nothing. Have you found a fix for this?



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It sounds like the high voltage portion of the power supply (ballast). Turn to the solder side of the P/S board and orient it so the silkscreen is legible. Check for burnt resistor R573, 2Kohm. It's center of board, 3/4" from bottom edge. If that's OK, check 3.3kohm resistors R621, 622, 625, 628, 629, and 630. They're in the top right corner. They tend to crack. Good luck.

Posted on Feb 20, 2010

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Still looking for a schematic, i'm a tech for 44 years myself, but on unfamiliar territory don't travel without the road map. The bulb probably isn't getting high voltage, but i'm unfamiliar with the circuitry. y'all showed having the schematic. but i couldn't operate your forum page

Posted on Dec 31, 2008


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Your new bulb is not lighting.
Check the connections are correct.
Have you also tried putting back old bulb to see if it works.


Please dont forget to vote this answer was helpful

Many thanks


Feb 18, 2011 | Toshiba TDP-S20U Multimedia Projector

1 Answer

I have a toshiba TDP-S3 projector. When it powers on the LED is green after about 10 minutes, the lamp goes out and the LED flashes orange. What could be causing this? The lamp is new. Thank you.

Sounds like overheating. The dust filters by the lamp module may be clogged. You have to remove the lamp and clean them as noted in the user manual. If you don't have the manual you can search for it on line. They suggest using compressed air and isopropyl alcohol to clean these filters. Of course, the blowers also need to be operating and external input and output vents not blocked or restricted.

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1 Answer

I just replaced the bulb unit in my Toshiba TDP-MT800 projector but when I press the power button nothing happens

Make sure the Lamp is seated correctly and firmly and the microswitch on the lamp door closes. Some projectors require a button sequence to be held down whilst powering up the projector in order to reset the lamp counter and restart it. You could also try the old lamp back in it for a few minutes to see if it starts up using the old lamp, providing it hasn't shattered.
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Dec 31, 2009 | Toshiba Office Equipment & Supplies

1 Answer

Toshiba TDP SC25 projector

The manual says it might be because the power went out when it was on. Just a note here, as projectors age they become more sensitive to power outages. When not in use turn off completely if you can. They have an on/off button.

Otherwise not sure but think you may need to replace the fan. Try cleaning it first but gently.

Jan 31, 2009 | Toshiba TDP-SC25U Multimedia Projector

3 Answers

I heard a pop and now the projector only shows black and white.

The color wheel has failed in youtr projector. There are 4 pieces of glass in the color wheel which fit togeter in a "pie" formation and they are red, blue, yellow & clear. This wheel is spun by a motor. The glass is glued to the motor's hub, and, when it fails the glass segments are thown off the hub. This gives you a B&W picture because all of the light is allowed to shine through the optics all of the time. Replace the color wheel with Toshiba part no: 23125963. It will be about $65. No soldering is involved, just use care with the ribbon cable to the motor. You will need a no. 2 phillips screwdriver and a set of jeweles screwdrivers to do this.

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Toshiba projector switching itself off

Hi 123d

Have you tried resetting the lamp timer ?

If you have and it didn't solve the problem , take out the lamp and check for any discolouration or markings on the lamp.

If you do find anything out of order then the lamp would need replacement.

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1 Answer

Power Failure, How serious a problem and cost?

Hi there

You will either be replacing the Main Power Board or the Ballast Board ( Lamp's powersupply ) The symtoms you described sounds like a faulty Ballast.

Both of the above parts are fairly cheap to replace.

Mar 25, 2008 | Toshiba TDP-T30U Multimedia Projector

1 Answer

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The lamp ballast which ignites the lamp has failed it sounds like. The red flashing lamp is the tell tale sign with a good lamp installed. Make sure the lamp door is closed too, there is a door switch that can also trigger the red lamp and no startup. There is a company in San Diego CA that can repair the unit called PROJECTOR DOCTOR

Nov 29, 2007 | Toshiba TDP-S20U Multimedia Projector

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