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I want acer psv0601 dlp projector dc circuit diagram

Dc 380v is ok.but not blink any led and no other dc volt.

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SOURCE: I have an Optoma EP7155

sorry too late, but the fans need to be replaced.

Posted on Nov 16, 2009

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SOURCE: lcd projector DLP technology circuit

Here I Show some pictures for your understanding of DLP and LCD technology and what is basic deference in betwen


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How can test my toshiba tdp-p9 projector ballas? before we order an expensive lamp.the problem is no display, the lamp is off, when the unit is power on.

OK you need sensitive ears. when the unit is switched on and the ballast power supply tries to start the lamp, it generates many 1000's of volts across the lamp to ignite the mercury vapour inside, much like a fluorescent lamp.
When this happens you should hear the snapping spark noise attempting to strike the lamp.
Sometimes it's very faint on some models and quite pronounced on others. It should last for about half a second or so.
If you cant hear it then maybe the ballast circuit or fuse or the 350V DC power feed is dead.
Another way is to have sophisticated metering across the lamp connector pins to detect the presence of the bursts of high voltage.
Hope this helps.

Apr 14, 2011 | Toshiba TDP-P9 DLP Projector

2 Answers

Lamp comes on briefly and then goes out

Check poewer connection
Check if fan filder is dirty ( if it is just hoover it out)
If "lamp" light on top of the projector blinks or stays lit - lamp probably faulty
How old is the Projector/lamp (average lamp life is around 2000-3000 hours)

Mar 01, 2011 | Optoma EP719 DLP Projector

1 Answer

JVC DLP MOD#HD55G466 what is the voltage from power supply to ballast and into the lamp.I have no voltage to the lamp could it be ballast?

Ballast board gets voltage from power supply connector CN90BL and volts readings are as follows:
Pin-1 = 380V DC
Pin-2 = Ground
Pin-3 = 15V DC
and output of ballast board would be 12,000 volts AC that goes to lamp to generate spark in its electrodes to produce high bright light.

If you get volts on input of ballast board but still lamp does not fire up then ballast board is not working.
Ballast board part number is QAL0765-001 and available with for $125
Hope these info will help you.

Nov 16, 2010 | Televison & Video

1 Answer

X1160/X1160Z No power. no on/off light


Sep 11, 2010 | Acer X1160 DLP Data Projector, 2,000 ANSI,...

1 Answer

After replacing the lamp in the projector Toshiba TW300, it shall then appear on the screen saver, and then after a few seconds off. then it beeps and lit LEDs ON and LAMP. How to fix this problem? lamp is...

1. check the lamp and the rating for this unit it may not have the proper rating for the DLP and is shutting down to protect the circuit.
You may not have the right lamp installed.

Feb 09, 2010 | Toshiba TDP-TW300U Multimedia Projector

1 Answer

How would this device behave when the lamp is broken, while the projector is otherwise ok?

it would depend on the projector. most will have the fans come on, the colorwheel spin (on dlp projectors only), then the lamp will light; if it doesn't strike, it'll try 2-4 more times. if no light after that, some projectors will have the fans shut off and one or more leds will flash and/or become red. others will have the fans stay on and have the leds blink and/or become red. check the lamp itself for bulges, black spots, or fogging. if it has any of those, replace it. if it doesn't light after that, you have another problem. for lcd projectors, it'll be the ballast or a fan. if it's a dlp projector, it's the colorwheel, ballast or fan. if you don't have the fans working either, the power supply is bad.

Jan 19, 2010 | Office Equipment & Supplies

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Optoma Projector power LED is blinking green,funs are not working, lamp not function, how can i solve this problem

i'd say power supply issue, but the led is blinking green. this means that it thinks it's in warmup/standby mode. but if nothing's running, the main board might be bad and needs to be replaced.

Dec 02, 2009 | Optoma HD65 DLP Projector

1 Answer

Turns of suddenly

see what the leds on the top are doing. what colors? are they blinking or still? if they are blinking, how many times? this will let you know what the problem is. shortcut: it's either the lamp is close to 2000 hours, it's overheating (dirty or no air flow), one or more of the fans are bad, or the power supply is not sufficiently supplying power.

Oct 13, 2009 | InFocus X10 DLP Front Projector 1080p DLP...

2 Answers

73" rear projection Mitsubishi TV

1. Check for no 8.4 volts DC at pin 3 of PC9A10 on the Power PCB, if low or missing replace PC9A10 part # 268P058020. 2. LED does not blink at plug in. Check for 3.3-volts DC at connector RF pin 3 (system reset) if low or missing suspect the reset switch S7L20 part # 432P109010 on the Control PCB. 3. LED does not stop blinking after plug in. Verify the standby supplies, 12-volts at connector KA pin 17, 6-volts at KA pin 18 and the 28-volts at KA pin 19, if the supplies are present suspect the DM PCB part # 934C067002 4. LED does not stop blinking after plug in. Check C9B01, C9B02, C9B10, and C9B11 (1000 UFD 16) on the DM PCB, if they are bad replace them with part # 181P734030 (680 UFD 16 V). 5. LED stops blinking after 70 seconds of plug in but will not power on. This model is equipped with a keyboard lock feature; this can be mistaken as a no power condition. To unlock the keyboard press and hold the "menu" button on the front panel for 10 seconds 6. LED stops blinking after 70 seconds of plug in but will not power on. Check for 3.2 volts DC at connector RF pin 4 and 5 on the Signal PCB if low suspect problems with the switches/buttons on the Control PCB part # 935D736001 7. LED stops blinking after 70 seconds of plug in but will not power on. Keyboard is not locked and key inputs at connector RF pin 4 and 5 check good suspect the E2P PCB part # 934C061001

Sep 05, 2007 | Mitsubishi WS-73713 73" Rear Projection...

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