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Power does not come on. Unit has not been used all winter

The unit worked last fall but now only the power LED comes on. The lamp and fan do not come on. I jumpered the internal fan switch so the circuit should be enabled. The DC power sources are not coming up apparently, since the fan is 12VDC. Does someone have a schematic ?

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What brand and model ?????????

Posted on Feb 25, 2009

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6ya6ya
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4 Answers

T.v.says lamp not working


If the display indicates then it is possible that the lamp has failed or that the Power to the lamp is cut off. You will need to check the status of the lamp and also the lamp connectors, the supply from the power.
Check to see if the cooling fan is clogged and so has reset the processor with a error. If so clean the filter to reset.

Jun 30, 2011 | Toshiba TheaterWide 52HM84 52" Rear...

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Sony kdf-37h1000. push power button and the green lite comes on steady and i can hear a fan. never gets to a picture or sound. it then sounds like it shuts power off but lite goes from flashing green to...


Hi catfishbob,
You're lamp came to its peak burning life and now its dead that's why you can't power up the unit and the led light keeps flashing. Once the lamp replace with new one your unit will back to normal again. Click this link for the replacement http://shop.ebay.com/i.html?_nkw=KDF-37H1000&_sacat=0&_odkw=sylvania+ld370sc8s&_osacat=0&_trksid=p3286.c0.m270.l1313.
Hope I helped you.
Have a nice day!
Thanks for using Fixya.

Mar 05, 2011 | Sony KDF-37H1000 37" HDTV

1 Answer

TV was working fine when we went to bed Monday (August 30) night. Got up the next morning and turned it on. It appeared it was going to come on, the green light flashed and then the lamp indicator light...


1. Red status LED, self-diagnosis error 44, check for open F9A06 on the Power PCB part # 283P128050 on the Power PCB 2. Red lamp LED, self diagnosis error 34. Check for 5-volts DC at J-9 connector pin 1 and 2 on the Engine Driver PCB if missing replace the Power PCB part # 930B921002 3. 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 4. LED stops blinking after 70 seconds of plug in but will not power on. Check for 3.2 volts DC at connector LE pin 3 and 4 on the Control PCB, if low suspect problems with the switches/buttons on the Control PCB part # 935D776001 5. LED stops blinking after 70 seconds of plug in but will not power on. Keyboard is not locked and key inputs at connector LE pin 3 and 4 check good. Suspect the E2P PCB part # 934C121001 6. (LED does not stop blinking after plug in) Disconnect the USB connector from the card reader to the front from the Chassis, if the LED stops blinking after 70 seconds replace the Card Reader part # 299P271010. 7. (LED does not stop blinking after plug in) Disconnecting the USB connector from the Card Reader did not help. Remove connector FC from the FMT PCB and plug the unit in, if the LED stops blinking after 70 seconds with FC removed suspect a problem on the FMT PCB (part # 930B924002), if the LED keeps blinking with connector FC removed suspect a problem on the DM PCB (part # 934C116002). 8. (LED does not stop blinking after plug in) On the DM PCB (part # 934C116002) check C81A2, C81A3, C81B3 and C81B4 (1000 UFD, 16V, 105C), if any are bad, replace all of them with part # 181P734030 (680 uFD, 16V, 105C). See Service Tip VS-78A 9. (LED does not stop blinking after plug in) On the FMT PCB (part # 930B924002) check C8F19, C8F21, C8F22, and C8F27 (16V 1000 UFD 105C), if any are bad, replace all of them with part # 181P734030 (680 uFD, 16V, 105C) See Service Tip VS-78A

Sep 08, 2010 | Mitsubishi WD-52725 52". Rear Projection...

2 Answers

Just got a 46hm95 toshiba for free cause the screen wont show anything. i can hear the fan come on. i am very mechanicly and electricaly inclined and have all things needed to test equipment short of an...


hello When the TV has been powered on long enough for the lamp unit to get hot, it may take several minutes for
the picture to appear on-screen. See "IMPORTANT NOTICE ABOUT HOT LAMP R
When the TV has been powered on long enough for the lamp unit to get hot, it may take several minutes for the picture to appear on-screen
in the following situations:
• When the Quick Restart™ feature is set to OFF and you turn the TV off and then on again within a few minutes.
• If the TV is on when a short-term power failure, power surge, or other similar power failure occurs, such that the TV loses and regains
power within a few minutes.
This is a property of DLP TV lamp technology and is NOT a sign of malfunction.
If this occurs, the green LED on the TV front panel will blink (and the red LED will be lit solid) until the TV is finished restarting the lamp
and the normal picture appears. If BOTH green and red LEDs are blinking at a one-second rate, you will need to turn the TV off and then
on again to restart the lamp.
ESTART" on page 8. if this no good check the lamp in side to see if it's not burn't out good luck

regards
shaun

Jun 01, 2010 | Toshiba 46HM95 46" HDTV

2 Answers

No sound or picture, 2004 pt50dl54j


remove back panel. blow out all the dust from all the components except the fan on the right.
Vacuum out all the dust.
Have you replaced the lamp? that would help too.
There are 2 small red lamp. One indicates HEAT problem. The other one is the LAMP indicator.

Jun 13, 2009 | Panasonic PT-50DL54 50" Rear Projection...

3 Answers

TV picture and sound goes off--leaving a blinking green light showing as on (power). Several times in the last week I have shut the power strip off and then on again and the TV went back on with the solid...


If TV goes off and the led stays blinking, that is because the TV is going on protection.
Protection is a special diagnostic mode that starts when an internal fault has been detected.
If this happens erratically while you are watching TV, then parts that can commonly cause the problem are PSU board, main board or digital board, ballast board and converge board on DLP, inverter on LCD, low buffer and sustain boards on plasma.

May 14, 2009 | Televison & Video

1 Answer

Panasonic PT43LC14 blinking green light on power button


Check your FAN if fan does not work Lamp will not come on ,also Lamps only last 5,000 up to 8,000 hours so every hour that set plays the lamp timer is counting .Go to E-Bay you can find lamps 99.00

Dec 03, 2008 | Panasonic PT-43LC14 43" Rear Projection...

1 Answer

Panasonic large screen Model # PT-61LCX65


Here is the proceedure to replace the lamp and reset the lamp hours.
Lamp Replacement Procedure:
1. Press the POWER button to turn off the power.
2. Wait for about 1 minute until the cooling fan stops.
Note:
The lamp cooling fan will continue to operate for about 1
minute after the power is turned off. Do not unplug the AC
Cord from the outlet until the fan has stopped. Avoid
interrupting the power by using circuit breakers or switchable
power strips.
3. After the cooling fan has stopped, unplug the AC Cord from
the outlet.
Note:
Please wait more than one hour before replacing the lamp.
[ Forced cooling function ]
If you need to replace the lamp more urgently:
- The Projection display has a forced cooling feature.
After the POWER button is turned OFF, and during the
first minute of the normal cooling fan operation, press
the VOLUME UP button on the unit and CH UP key on
the remote at the same time for more than 5 seconds.
The cooling fan operates for about 10 minutes. (LAMP
LED will flash 5 times every 5 second and POWER LED
will flash red for 10 minutes.)
4. Remove the Front Cover Unit from the latches.
5. Turn the Knob to the left.
6. Pull the Lamp Cover out.
7. Loosen the Screw on the Lamp. Then, pull the Lamp.
Note:
Because the Lamp may still be hot, use caution when
handling.
8. Install the new Lamp, and tighten the Screw.
9. Install the Lamp Cover, and turn the Knob to the right.
10. Install the Front Cover Unit.
Lamp Time Reset Procedure:
Be sure to reset the Lamp time to "0" after replacing the new
Lamp.
1. Plug in the AC Cord, and turn on the power by pressing the
POWER button.
2. Press and hold the VOLUME DOWN button on the unit and
the SPLIT key on the remote together for over 5 seconds
in power on condition.
When the reset is finished, the display will indicate that the lamp hrs have been reset to 0 and the LAMP LED goes out.

Jul 26, 2008 | Panasonic PT-61LCX65 61" Rear Projection...

2 Answers

Toshiba 62HM14


What are the labels on the lights? Timer/Lamp/Service and what color is wich?

Jun 03, 2007 | Toshiba TheaterWide 62HM94 62" Rear...

1 Answer

Lamp Light comes on afer 90 seconds


If you get a pix in the screen and then it goes away I will check the fans and make sure they are running ,it should have at least 2 and one of them should be cooling the lamp,if you never get a picture and the led glows after 90 seconds you might have a ballast problem,the ballast is the board that powers the lamp and it receives voltage from the power supply to strike the lamp.Be careful when working in the back.

Sep 25, 2006 | Mitsubishi WD-52525 52" Rear Projection...

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