Question about Televison & Video

Open Question

Ballast blow out on Nview Diamond Projector

I need to find a replacement ballast for an Nview Diamond projector. The Diamond series uses an Osram VIP 273/45 lamp. I got about 400 hours of use when, one day, I flipped the projector on and the lamp shattered into a million pieces inside the housing. I made the misfortune of immediately replacing the lamp with a back up and it too cracked. I suspected the ballast as the rest of the unit lites ok and fans work Q: can I read the 38 volts (270w / 7.1amp) with an ohm meter directly from the socket, or should I check the circuit elsewhere? Where should I look for a ballast of this type? FYI: As a large list of manufacturers use this type of lamp in their machines as well it should be easy to locate parts.

Posted by paulsbench on


5 Related Answers


  • 4234 Answers

SOURCE: Toshiba Ballast part number

Use the following part number: 23122468. The cost is $48.38 from TRITRONICSINC.COM

Posted on Mar 18, 2008



  • 3 Answers

SOURCE: Panasonic PT-45lc problem

I took the rear bottom off of the set,lots of screws to take off.
On top of the bulb housing is a small yellowish thermal fuse.

I took mine completey out,jumped the black wire together,and bingo.set works perfectly.

Posted on Apr 16, 2008


Sonny Berry

  • 8617 Answers

SOURCE: ballast replacement

Your set uses the Phillips UPH100W 1.3 100 1amp bulb part number 6912V00006A which uses Ballast EUC 6913V0002A and the actual ballast isMB03CA part number 6871VSMB13F I would contact LG and give them these numbers. Is your ballast bad or is the BallastEUC bad? Let me know if I can help you further.

Posted on May 12, 2008


  • 736 Answers

SOURCE: dont know what the difference is between lamps

these are Panasonic arc lamps .. the numbers 100-120 indicates the intended voltage range of operation .. the /1.3 or /1.4 is the current in amps .. so the 1.4 is slightly higher current and likely a bit brighter .. thats 156 watts vs. 168 watts .. arc lamps are much more efficient than incandescent so 150 watts in an arc lamp is a lot more light than a 150 watt incandescent...

Posted on Sep 04, 2009

Testimonial: "thanks that helps out alot. you are the only one that actually ansered my question"


Lou Grein

  • 1 Answer

SOURCE: 52HM84 Toshiba DLP with apparent failed lamp (replaced ballast)

I found R3 on the original board to be open, along with reading an open on CR1, D5 and D6. All the other transistors and the transformer check out. The only thing I have to do now is find out the specs of the diodes. The replacement board also had CR1, D5 and D6 open (R3 was OK). There had been some threads on various locations where remanufactured boards had bad components (the transistors were changed but not some of the other components).

Posted on Jan 18, 2010

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Bypass ballast

I think your projector has a vip 4ac / 380 ballast. When u open the top and the back cover u will see it .u need to tacke of the motherboard unclipp the tree cables to get access to ballast board. The 5 pin cable running from the right top of the main board goes in to the ballast board where u will find 3 photocupplers 2 on the side twords the back and one on the other side. U need to shunt the two pins of the bottom one (those facing the 5 pin cable )
In that way will runcontinuously but u need an external power supply for your new bulb.hope will work for

Sep 29, 2013 | Dell 3400MP Projector

1 Answer

I have a Sanyo plc-xt25 LCD Projector and when I plug my ac cord in, the fans turn on but no lamp comes on. I changed the lamp and still no picture. What do I do?

Every projector lamp is equipped with ballast. The problem area is ballast. Either the ballast is not getting DC supply or the lamp turn ON signal from the projector main board or the ballast is faulty. Remove the lamp. Connect the projector to the mains supply. Check the voltage at the lamp connector inside the projector without turning it ON. It should be around 65 volts A/C. (Warning: Multimeter will get damaged if the projector power is turned ON due to generation of high voltage) If you find this 65 volts then it confirms that it has DC supply & the ballast is functioning. The ballast receives the the turn ON signal from microcontroller through opto-coupler on the ballast. The ballast opto-coupler can be checked by providing external 5V DC supply between pin 3 (+ve) & 4 (-ve) in turn switches ON the lamp. If this works then there is no problem with your lamp & ballast. The problem lies with the main board. If this does not solve your problem then give me the feedback.

Aug 04, 2011 | Sanyo PLC-XT25 LCD Projector

1 Answer

I have a infocus IN35 that at 100 hours burnt out a bulb. Thinking that it was just a bulb problem I bought a new bulb and it lasted 20 minutes. a shop said its probably the ballast that is the...

It is not a common problem. Ballasts rarely need repairs. Have you reset the lamp hours to zero after installing new bulb? If, yes to confirm about ballast please ask the TV repair shop man whether previously he had repaired any DLP projector. There is lot of difference in technology of DLP projector & TV (except DLP Projection TV). The problem could be in the projector main board. The lamp lights after getting Lamp ON signal from the projector main board. As the lamp ignites the ballast sends the signal of Lamp Lit. If the projector board senses that any blower/exhaust fan or colour wheel is not running then it will send a signal to Switch OFF the lamp. If you are tech-savvy then do as follows to check about lamp & ballast. Remove 5 pin connector from the projector. Connect projector to mains supply. Get a 5V DC power supply. Connect +ve to pin 3 & -ve to pin 4 of the ballast connector from this supply. The lamp should light. If it does not light then there is problem in the ballast (if the lamp is new). To give a chance you can check it for your lamp which lasted 20 minutes. Generally ballasts are made by OSRAM. You can get the ballast from OSRAM dealer. You will need the part number for that. Take out the ballast, it is there on it.

Apr 14, 2011 | InFocus IN35 Projector

1 Answer

How do I check if it is a ballast or not? And How does that get replaced?

If the lamp is good by checking it with an Ohm meter, then more likely the ballast is bad. Check the Sharp website for support and parts.

Feb 09, 2011 | Sharp Conference Series XG-P25X Multimedia...

1 Answer

The fuse has burned out in my projector benq MP610. So I opened the projector to replace it : same result. I verified, the lamp is also burned out. Do you think the burned out lamp can make the fuse to...

before a lamp blows it draws more current than it usually uses, but since it uses dc, it couldn't blow the ac fuse. but if the regulators on the ballast or power supply were bad, it would blow the lamp and draw ac power, possibly blowing the fuse.

Dec 02, 2009 | BenQ MP610 Multimedia Projector

1 Answer

My infocus X3 projector won't come on, I get a green light at first and then it turns red. What is the problem?

Well the single re blink of the LED indicates Lamp failure. Though most likely there can be a few other causes for your lamp not lighting. here's the most likely problem if the lamp has not failed.
It could be the lamp power supply (ballast) has failed.
Or if you don't hear the fans running either there is a possibility the "over-temp" sensor has failed.
If the fans are running I would try replacing the lamp.

Take Care!

Oct 16, 2009 | Nview Z215 10.4" LCD Panel with Video(16.7...

1 Answer

Ballast issue on LP640

first off, many churches and schools hang their projectors from the ceiling, and the only time they take them down is when they don't work. it sounds rational, but it gets dusty up there, and without proper and relatively frequent cleaning, the dust builds up and the projector can't release the heat properly. this causes a lot of malfunctions. the ballast is only one of them.

to replace the ballast:

make sure you can get the part from infocus or an authorized service center. it's part # 525-0085-51. after you remove the cover (4 screws on the bottom. you'll need a T10 torx driver. slowly slide the top forward and lift off), gently remove the ribbon cable by sliding the cable locks (on both sides of the cable) towards the front and pulling the cable out. the ballast is at the front of the projector next to the lens and in front of the lamp. pull it out and remove the ballast from it's housing. there are 3 cables coming off- the power plug, the lamp plug, and the lamp enable plug. remove those and replace the ballast. reverse the steps to install.

Aug 13, 2009 | InFocus SP-LAMP-017 Projector Lamp for...

1 Answer

Projector will come on but lamp will go out

still too warm. it need to cool down more. could also be a ballast issue. if the caps are drying out, a boost of power could overload it and it'll shut down.

Aug 06, 2009 | Nview Z215 10.4" LCD Panel with Video(16.7...

1 Answer

NEC VT695 (not a vt570) bad lamp blowing ballast board?

We have the same model here at our school too. I know of two that have done exactly what you said. I am trying to figure out if this is NEC fault. Bulbs are expensive and if the projector and NEC is a fault; we will definitely be moving on to a different brand.

Oct 03, 2008 | NEC VT570 Multimedia Projector

Not finding what you are looking for?
Televison & Video Logo

Related Topics:

72 people viewed this question

Ask a Question

Usually answered in minutes!

Top Televison & Video Experts

The Knight
The Knight

Level 3 Expert

76390 Answers

Cindy Wells

Level 3 Expert

6112 Answers


Level 3 Expert

85239 Answers

Are you a Televison and Video Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides