Projector prism glue (Infocus LP290)

Collapse
X
Collapse
+ More Options
Posts
 
  • Time
  • Show
Clear All
new posts
  • tmcw
    Badcaps Veteran
    • Oct 2010
    • 382
    • Ireland

    #1

    Projector prism glue (Infocus LP290)

    Got this projector that was having blue and yellow bands along the left and right portions of the projection respectively.

    When I opened it up, I found that the second prism after the lamp wasn't sitting in it's correct place, the glue has come undone. (lamp>prism>mirror>prism>)

    I managed to carefully move the prism to it's correct place, and the picture appears to be correct, but what sort of glue do I need to get to refix the prism? When the projector is tilted backwards, the prism falls out again, so needs to be fixed back in again.

    The glue/compound used before has left a white, hard reside behind it, and seems to have been used on all four edges of the prism/prism housing.
  • newtothis
    Badcaps Legend
    • Mar 2013
    • 1556
    • england

    #2
    Re: Projector prism glue (Infocus LP290)

    id use something simple like PVA... if it doesn't work it easily peels back off with no harm done

    Comment

    • freakaftr8
      Badcaps Legend
      • Oct 2012
      • 3743
      • USA

      #3
      Re: Projector prism glue (Infocus LP290)

      Lol pva is the kind of stuff they used in color crt tvs from the 60s and 70s for the glass outer layer. Be careful not to get any on the lens. But yeah that will work
      Last edited by freakaftr8; 12-10-2013, 01:22 PM.
      Did I leave the soldering iron on?

      Comment

      • tmcw
        Badcaps Veteran
        • Oct 2010
        • 382
        • Ireland

        #4
        Re: Projector prism glue (Infocus LP290)

        Thanks guys...

        Is that the same white stuff (globs of it) we sometimes see holding some larger components to the circuit board (I've always presumed to aid with assembly/soldering)?

        Comment

        Related Topics

        Collapse

        • acedogblast
          Guide to transplant MEC1503 EC chip and EEPROM reprogamming for T14s gen 2 and X13 gen 2
          by acedogblast
          This is a guide that I am writing for helping others to replace their MEC1503 EC chip if it breaks (or to get around an inconvenient prompt to the BIOS). This forum has been extremely helpful to me so I would like to contribute to help others. I will tell you right now that this task is very difficult to do. You MUST have experience and tools to do precision micro-soldering, BGA reballing, trace repair, and general laptop repair skills.

          There are some specialty tools needed to do this task. The replacement MEC1503 chips can be acquired from Aliexpress. Do not buy the bare chips as...
          11-02-2024, 05:13 PM
        • Document Archive
          Lenovo ThinkPad P51s + ThinkPad Stack Mobile Projector Mobile workstation P Specification for Upgrade or Repair
          by Document Archive
          This specification for the Lenovo ThinkPad P51s + ThinkPad Stack Mobile Projector Mobile workstation can be useful for upgrading or repairing a laptop that is not working. As a community we are working through our specifications to add valuable data like the P51s + ThinkPad Stack Mobile Projector boardview and P51s + ThinkPad Stack Mobile Projector schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information. Alternatively you can request additional help from our users directly on the relevant badcaps forum....
          09-06-2024, 06:11 AM
        • mitsu2k
          The Real Dangers of conductive glue.
          by mitsu2k
          I know many folks on this forum warn against conductive glue and suggest removing it immediately upon site. I'm here to vouch and say these people know what they are talking about. To be more accurate, the glue isn't intended to be and doesn't actually start out conductive. It gets conductive as it is heated by components that get hot. The glue starts out to be a light tan color but as it is exposed to heat, it gets darker and darker until it is a dark brown. I have found that it becomes conductive at the point that it reaches a light brown color on darker.

          Here is an experience I...
          04-16-2023, 06:29 PM
        • objecttothis
          EVGA 430W PSU Correct voltages but computer won't turn on
          by objecttothis
          I had a desktop form factor mini-server die on me a few weeks ago. Through my initial diagnostics, I was convinced it was the motherboard because when I shorted the Green wire on the ATX connecter, the multimeter gave me all the correct voltages on the various pins of the ATX connector and 5VSTB was also correct. To my surprise the replacement motherboard wouldn't turn on with the case power button either. I threw in another PSU and it turned on right away. This is an 80 Plus EVGA 430W PSU with PN:100-W1-0430. I pulled the cover off and don't see any immediately obvious blown caps or scorch...
          02-08-2025, 11:19 AM
        • narf
          Epson EB-U42 projector / Caps with 0.7 ohms ?!
          by narf
          hi all,

          first of all: i'm a (motivated) newbie, so please forgive me any stupid question i may or may not ask

          i'm currently repairing a projector: Epson EB-U42 that doesn't start (no lights, nothing).

          what i've found so far:
          - the PSU does its job and supplies 12V to the mainboard via the connector.
          - shortly thereafter, there is a mosfet (TS420-600B) where i can test 12V on the one side (in the data sheet this side is called Anode), Gate 0V, Kathode shorted to ground
          - not far away, there's the first cap with a resistance of 0.7 ohms....
          07-02-2024, 03:53 PM
        • Loading...
        • No more items.
        Working...