Make sure your ballast have the same lable of?A3754400DG or your projector use
P-VIP 190/0.8 E20.8 bulb.
If you need other model, please tell me your projector model name or give me
your ballast pictures.
If your projector lamp LED show "red", and change a new lamp, still not work,
then may be need change a lamp ballast/driver.
You can buy one and test your projector. But sometimes it is other problem,
lamp led will show "red" also.
I can send by DHL($20-$25) or E-packet($5) for your freight choose.