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Author Topic: Strong AP-5 problem
Alan Gilbertson
Expert Film Handler

Posts: 148
From: Carpentersville Il 60110
Registered: Nov 1999


 - posted 08-26-2006 03:29 PM      Profile for Alan Gilbertson   Author's Homepage   Email Alan Gilbertson   Send New Private Message       Edit/Delete Post 
I have a Strong AP platter. It is a 5 deck system and the bottom half will not rewind, but it will payout. This is happening with the 3 decks running off of the same variac. Any clues? Thanks

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Gordon McLeod
Film God

Posts: 9532
From: Toronto Ontario Canada
Registered: Jun 99


 - posted 08-27-2006 01:09 PM      Profile for Gordon McLeod   Email Gordon McLeod   Send New Private Message       Edit/Delete Post 
probably the micro switch on the takeup roller that does the programing for payout/takeup

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Steve Guttag
We forgot the crackers Gromit!!!

Posts: 12814
From: Annapolis, MD
Registered: Dec 1999


 - posted 08-27-2006 06:06 PM      Profile for Steve Guttag   Email Steve Guttag   Send New Private Message       Edit/Delete Post 
I don't have a schematic in front of me but if memory serves...there is a resistor right after the variac to determine the take up speed. In non-ap platters there is a resistor in each motor. The resistor forces the shuttle/elevator/yo-yo lower so that the payout platter has extra speed available to catch up.

I would check the schematic of the AP platter, locate the resistor for the bottom decks and check the connections there.

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Gordon McLeod
Film God

Posts: 9532
From: Toronto Ontario Canada
Registered: Jun 99


 - posted 08-27-2006 09:52 PM      Profile for Gordon McLeod   Email Gordon McLeod   Send New Private Message       Edit/Delete Post 
That resistor is usually mounted to the plate on the top of the post

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Monte L Fullmer
Film God

Posts: 8367
From: Nampa, Idaho, USA
Registered: Nov 2004


 - posted 08-28-2006 03:40 AM      Profile for Monte L Fullmer   Email Monte L Fullmer   Send New Private Message       Edit/Delete Post 
This kinda answers my question that I was having on the Alpha platters then - why the A-3 units have a three pin plug to the motor whereas the AP-3 has only the two pin plug - since the A3 has those 2ohm 25w resistors within the motor frame working with the mode switch on the front doing the "A/B" switching between diode and resistor....is this right on this assumption then?

-Monte

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Steve Guttag
We forgot the crackers Gromit!!!

Posts: 12814
From: Annapolis, MD
Registered: Dec 1999


 - posted 08-28-2006 06:13 AM      Profile for Steve Guttag   Email Steve Guttag   Send New Private Message       Edit/Delete Post 
Ayup.

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Alan Gilbertson
Expert Film Handler

Posts: 148
From: Carpentersville Il 60110
Registered: Nov 1999


 - posted 08-28-2006 02:18 PM      Profile for Alan Gilbertson   Author's Homepage   Email Alan Gilbertson   Send New Private Message       Edit/Delete Post 
Thanks to all for the help. The problem did happen to be one of the resistors in the top of the platter column. One of the wires had come loose.

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