When I hit the start button on my NP 115 it begins to sound like the fan labors and pulses until it shuts down and the red light blinks in a series of 6 blinks. It also has a very hit frequency squeak that comes and goes as the fan pulses..I have changed the bulb and that is not the problem (unless I got two bad bulbs). The projector has never been used.....thanks john

Sounds like it's time for new plugs.

overheating issues,

The red light is indicating the set has shut down for a specific reason. You can dtermine the reason by going to the sets front panel and pressing the menu button and the device/input button both in together and hold for 6 seconds. The light will switch and begin to blink a series of blinks( First number) and pause briefly then blink another number of blinks (second number) then it will repeat that same two digit blink code. Let me know the code and I will let you know what happened to shut the set down. Respond to this same post for assistance.

The following are detail instructions on how to Pair (sync) a Plantronics Bluetooth Headset to your Bluetooth Cell Phone:

1 - You need to go into the device you wish to pair it and turn the Bluetooth feature first.

2 - Then you need to place the headset in pairing mode so your phone will find it.

Find your model headset in the instructions below. Once the headset is in "Pairing" mode you will then need to follow the instructions in your cell phone or Bluetooth device's user guide on how to go it to your phone and search for the headset & pair it to a Bluetooth headset.

The passkey is 0000 (4 Zeros) except models M1000 and M1500 (see below for their number )

For the Plantronics M3000/M3500 (discontinued):

Pressing and holding down the volume up key and the talk button at the same time. Hold them in together until the indicator light on the headset starts flashing red then green.

For the Plantronics 510 Voyager:



Pressing and holding down the call control button and holding down the volume up at the same time until the indicator light on the headset starts flashing red then blue.



Plantronics Explorer 320,330,340 & 350

Begin with the headset turned off. Press and hold down the silver call control button in for 6-10 seconds. The light will flash blue first. Continue to hold the button down then release the button when the indicator light starts flashing red then blue.



Plantronics 655, 665

Begin with the headset turned off. Press and hold down the silver call control button in for 6-10 seconds. The light will flash blue first. Continue to hold the button down then release the button when the indicator light starts flashing red then blue.





Plantronics Discovery 640, 645, 640e

Begin with the headset turned off. Press and hold down the silver call control button in for 6-10 seconds. The light will flash blue first. Continue to hold the button down then release the button when the indicator light starts flashing red then blue.



Plantronics Pulsar 590/590e & 590A & a Bluetooth device:

Begin with the headset turned off. Press and hold the call control button then power the headset on and when the indicator light flashes red and blue, release the call control button. Once the headset is paired successfully the headset will flash blue.

For the Plantronics Pulsar 590 & 590A & the Universal Adapter: Begin with the headset turned off. Press and hold the call control button. Power the headset on and when the indicator light flashes red and blue, release the call control button. Turn the Universal Adapter on. Press and hold the adapter pairing/connect button for 7-10 seconds. When adapter starts flashing red and blue release the buttons. The headset and adapter will flash blue when paired successfully.

Plantronics Pulsar 260

For the Plantronics Pulsar 260, Begin with pendant powered on.

Press and hold both the mute/play/pause button and the power on/off/pairing button simultaneously. When the
indicator light flashes red and blue, release buttons. While pendant is flashing red and blue, use the phone menu to search for Bluetooth devices and select "260 Plantronics." When prompted for passkey,
enter 0000.


For the Plantronics M2500 (discontinued):

Start with the headset powered on. Press and hold down the call control button while also rotating the multi function dial upward (away from the light) until the indicator light on the headset starts flashing red then green. When prompted for passkey, enter 0000.

For the Plantronics M1000 (discontinued):

Hit and hold the volume/mute switch in until the indication light starts blinking.


For the Plantronics M1500 & A500 adapter (discontinued): Turn the headset on and the adapter off. On the headset push in and hold the mute/volume dial until the indicator light begins to flash. On the adapter press and hold the blue power button for 10 seconds. The light on the adapter will flash once after 3 seconds- continue to hold the power button for another-7 seconds until the light flashes red. If the pairing is successful, the headset will sound a tone and both the headset and adapter lights will turn off.

For both the Plantronics M1000/M1500 (discontinued): If you remove the battery cover from the headset and then remove the battery itself. On the Green PC board itself there will be a letter followed by 4 numbers. These 4 numbers are your personal PIN code.

You can also use the Plantronics Bluetooth Pairing Guide

I have the same problem with mine. I can recreate the problem by stopping the small fan on the right side by the inputs. I'm not sure if its a heat problem or not. I already bought a new Sony Bravia but will continue to tinker with this for awhile.

Is the projector receiving a source signal? if not it will power itself down after whatever time you have it set to do so when no signal is present.
Just an idea?

The 2 blink error is a temperature error and the 6 blink error is a thermal fuse error. You may need to unplug the set and get you a can of canned air, take off the back lower cover and blow out all of the fans inside the set.

HI, the power supply is unstable or weak. you will need to replace this failing power supply soon. it is damaged.

The VT-90 uses 4 CR 2025 batteries. Once you install them you must initialize the unit by holding the "erase all" button for 10 seconds. After a series of blinking the unit is ready again. Good luck.

OK EVERYONE I FOUND ALL YOUR ANSWERS , IM JOHN FROM NEW JERSEY [email protected] , FOR THE TRISONIC UNIVERSAL REMOTE CONTROL , TC-RC488 AND MAYBE OTHERS , INSTEAD OF THE CODES THIS IS EASIER,TURN ON THE TV OR VCR ETC. FOR THE POWER MUST BE ON WHILE DOING THIS PROCEDURE , PRESS THE YELLOW SET UP BUTTON AND THE DEVICE KEY U WANT SUCH AS TV1 OR VCR1 AND HOLD THEM BOTH DOWN UNTIL THE RED LIGHT ON UR REMOTE STAYS ON THEN IMMEDIATELY AFTER HIT THE YELLOW SETUP BUTTON AGAIN UNTIL UR RED LIGHT STARTS BLINKING THEN POINT THE REMOTE AT YOUR TV OR VCR AND KEEP HITTING THE RED POWER BUTTON AS THEN YOUR REMOTE IS TRYING TO FIND A CODE AND WILL EVENTUALLY FIND A CODE , AND YOUR TV OR VCR WILL SHUT OFF , THEN THE RED LIGHT WILL BLINK LET IT BLINK UNTIL IT GOES TOTALLY OFF, THEN HIT THE POWER BUTTON AND YOUR REMOTE SHOULD WORK , SOMETIMES YOU HAVE TO HIT THE DEVICE KEY AND YELLOW SETUP KEY SEPARTELY AND THEN THE RED POWER BUTTON, I CALLED TRISONIC AND ACTUALLY HE HELPED ME AND I HELPED HIM , HE SAID I SHOULD WORK FOR TRISONIC , THIS IS A QUICK SEARCH , NOT REQUIRING ANY CODE NUMBERS, HOPE I HELPED YOU ALL SINCERELY , JOHN A.CLINE , CHECK OUT MY LIST OF LYRIC BOOKS AND MUSIC AT WORDCLAY.COM BYE!!!!!!!!!!!!!!!!