8mm Forum: Eumig P8 Imperial Projector help?

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Posted by Simon John James (Member # 1697) on August 05, 2009, 10:45 AM:

I have recently acquired stated projector, upon attempting to get it running again i discovered that the previous owner has had a tinker around with the wiring. Several were loose upon opening it up. I have made several educated guesses. I have had motion from it but no light, i have also replaced bulb to ensure it had not blown.

So i am in need of another owner to be so kind as to possible give me a guide on what should be connected to what, and if possible an image!?

Cheers Simon

Posted by Barry Johnson (Member # 84) on August 07, 2009, 06:42 AM:

As these machines are all switch on only with lamp,then something isnt right,and if the previous owner has had a fiddle ith the wiring then clearly something has been disturbed within the machine.As the motor runs then all is well there.If its a new bulb then the problem lies in that circuit.Either a wire is detatched from the transformer,or from the rewind circuit.These projectors have power rewind witch extinguishes the lamp on rewind,this is actioned via the gate lever being fully opened.Trace the lamp wire colours from the lamp to the transformer for any breaks,and then back to the gate lever.This is NOT going to be easy as its tightly packed in there,but hopefully,this will give you somewhere to start.

Posted by frank arnstein (Member # 330) on August 08, 2009, 09:02 PM:

Hi Simon
Here is an image of a P8 Imperial with the back off.
Don't know if it helps or not with your wiring issue.
Be more specific if you want another pic.
dogtor pufferfish

Posted by Simon John James (Member # 1697) on August 17, 2009, 05:30 AM:

Thanks a lot for the replies, image is extremely useful, currently in the process of stripping down to see what actually is going on inside. There is one more issue... Behind the power socket there is some strange connections i feel arn't quite right, if you could describe what wires are connected to what, or an image (if possible). its held on via the two bolts either side of the socket. The 2 green wires, one connected to the motor housing, but where does the other one connect to?

Many thanks for the help people, Can't wait to get this old beauty up and running!

Simon.....

Posted by Barry Johnson (Member # 84) on August 17, 2009, 06:15 AM:

Those wires on the power socket are quite normaland fitted to all models.Your power lead will probably have corresponding contacts on it to complete the circuit.
WARNING:
If you are tinkering about with the mains plugged in for any reason,note that the motor pulley from which the belt tranfers the drive to the intermittent part is LIVE AND QUITE NORMAL ON THIS PROJECTOR.

Posted by Simon John James (Member # 1697) on August 24, 2009, 08:37 AM:

Got it up and running!! Thanks for all the help on here guys. I completely stripped down projector, checked all connections, and it became evident that the sliding gate operates a slide switch inside behind transformer, this was loose and not making the correct contacts. So after sticking back down to correct position it now runs perfectly. Again Thanks.

Simon.....

Posted by frank arnstein (Member # 330) on August 24, 2009, 09:07 PM:

Hi Barry

I wasn't aware of this scary phenomenon.
Are you sure that the motor drive pulley is live?
Where can this be confirmed?

You would think they would short out through to earth....
I have fitted many drive belts but haven't been zapped yet.

There are a few P8 machines here that I will test later, and see if they are alive on the motor shaft.
Hope they aren't.
dogtor pufferfish
[Eek!]

[ August 26, 2009, 02:57 AM: Message edited by: frank arnstein ]

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