Posts: 1060
From: Cottage Grove OR
Registered: Dec 2010
posted September 26, 2012 07:54 PM
I have a Sears Tower Super Automatic, a nice projector that ran very steady until the belt became very worn. I finally had the chance to convert this projector (with a 1.2 lens and variable speed)to a halogen lamp and replaced the belt.
The lamp conversion worked just fine however, now the projector is running at around 18-20 fps, stuck there, speed decreases when it's supposed to go up!
Posts: 5468
From: Nouméa, New Caledonia
Registered: Jun 2003
posted September 26, 2012 08:23 PM
quote: Could the new b ulb conversion be drawing too much current?
If that is the case, try projector running with and without the lamp. Do you notice the speed changes? If it does not, then I doubt that is the case, Pat.
Posts: 3468
From: Sunnyvale, CA USA
Registered: Sep 2011
posted September 26, 2012 11:06 PM
The problem Gerald is DO NOT USE THE EJL BULB . It's 24V 200W . Again... you can only use A 21V bulb 150W like I have said previously...the EKE or EJV.
Posts: 239
From: El Cerrito,CA,USA
Registered: Jan 2010
posted September 27, 2012 10:04 PM
Gerald I don't know if this will help you or if you already know about Al Lasher's Electronic Store on University avenue in Berkeley. They have an assort ent of turntable belts there.
Posts: 1060
From: Cottage Grove OR
Registered: Dec 2010
posted September 27, 2012 10:18 PM
Yes Richard, I've been to Al Lashers. Only problem there is belts are non-returnable and I think I have the right one. However, I'll go there again this weekend and try a smaller one.
Posts: 3063
From: Gt. Clifton,Cumbria,England
Registered: Jan 2012
posted September 28, 2012 06:21 AM
I'm just having a wild guess Gerald,but on some projectors,they have potentiometers for the control of current, is it possible that it has been moved.Or maybe the transformer is on it's way out.Even with no belts attatched you would have an idea if the machine is running to correct speed.Is there another belt in there that alters the cycles that has been overlooked?