NEC projector fix - UK Vintage Radio Repair and Restoration Discussion Forum

Malcolm G6ANZ · 19th Aug 2021, 11:56 am

This repair is modern tech but it has stopped a bit more land fill. At work we use projectors to display patient details onto a wall rather than the normal PC screen. One of these stopped working (NECM260XS) and would not fire the lamp. So we removed it from the ceiling mount and started to look at it. Between the lamp and the dichroic mirrors there is a shutter system that can control the brightness of the image. This was jammed. I removed the tiny motor and the shutters moved freely, the motor also spun easily but when the motor drive was engaged it jammed. Close inspection with a bright light and a magnifier showed that the drive pinion on the motor had split so causing the jam. These modules are available from E Bay but we are not allowed to buy from there, other companies said the part was obsolete. Cue the scrapping of the projector. I interrupted its journey to the bin and got a new lamp and shutter module from E Bay. Refit the parts and a decent quality projector for a few pounds. The 1P coin is for scale.

Malcolm

mole42uk · 20th Aug 2021, 9:04 pm

Excellent recovery from the scrap bin!

whiskas · 20th Aug 2021, 9:12 pm

It's always good to see good gear rescued and brought back to life
Well done Malcolm

19th Aug 2021, 11:56 am	#1
Malcolm G6ANZ Octode Join Date: Feb 2006 Location: Bristol, UK. Posts: 1,042	NEC projector fix This repair is modern tech but it has stopped a bit more land fill. At work we use projectors to display patient details onto a wall rather than the normal PC screen. One of these stopped working (NECM260XS) and would not fire the lamp. So we removed it from the ceiling mount and started to look at it. Between the lamp and the dichroic mirrors there is a shutter system that can control the brightness of the image. This was jammed. I removed the tiny motor and the shutters moved freely, the motor also spun easily but when the motor drive was engaged it jammed. Close inspection with a bright light and a magnifier showed that the drive pinion on the motor had split so causing the jam. These modules are available from E Bay but we are not allowed to buy from there, other companies said the part was obsolete. Cue the scrapping of the projector. I interrupted its journey to the bin and got a new lamp and shutter module from E Bay. Refit the parts and a decent quality projector for a few pounds. The 1P coin is for scale. Malcolm Attached Thumbnails

20th Aug 2021, 9:04 pm	#2
mole42uk Nonode Join Date: Aug 2010 Location: Resolven, Wales; and Bristol, England Posts: 2,608	Re: NEC projector fix Excellent recovery from the scrap bin! __________________ Richard Index: recursive loop: see recursive loop

20th Aug 2021, 9:12 pm	#3
whiskas Octode Join Date: Mar 2016 Location: Knutsford, Cheshire, UK. Posts: 1,495	Re: NEC projector fix It's always good to see good gear rescued and brought back to life Well done Malcolm __________________ ...where on earth did that spring/screw go??