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Film Expert |
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Joined: Wed Apr 02, 2014 2:42 am Posts: 70 Location: Olympia, Washington
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There were several versions of the amplifier during the production run of the "R" series projectors. Some have two fuses while others have only one fuse. Check the simple things first like look for a blown fuse and be sure all cables and connectors are fully seated in their sockets.
Some versions of the amplifier used those "all-in-one" series of amplifier chips which always go obsolete months after their introduction. Other versions of the amplifier use discrete output transistors which are commonly available to repair the amplifier.
Always check the exciter lamp to see if it's lit when the amplifier is on and the projector is in the "forward" mode.
Last edited by Ken Layton on Sat Apr 10, 2021 1:03 pm, edited 2 times in total.
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