amaro stylist, photo cell not working

[Patrick Ryan]

Hi folks,
I have just acquired another Ampro Stylist and the amplifier seems fine, I get volume from the speaker itself,
the exciter lamp lights, but still no sound. I tried a working photo cell from another working Ampro , all connections seem fine (I did a manual check only) but still no sound. Any ideas please gentlemen?

[Maurice Leakey]

Perhaps the PEC is not receiving its working voltage.
Click to get to a schematic.
UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Ampro Stylist projector (vintage-radio.net)

[John Burgess]

Hello Patrick
Just a simple test which you may have already tried. Turn amplifier volume up ,them move a piece of paper up and down between the exciter beam and photo cell, you should hear a plopping sound as you move the paper. If this happens your pec is ok , if not you may then have an input wiring , component issue.Also you could try the mic input to see if the amplifier is working ok.
Good luck, John

[Patrick Ryan]

Thank you gentlemen, as always

[Nick Regan]

Ampro Stylist Service and Parts Manual (panchromatic.co.uk)

Service manual if this helps?

Nick

[Maurice Leakey]

There may be another problem. Dirty optics.
Check that the projected light slit is reaching the film at the sound drum.

[Patrick Ryan]

Thanks Maurice

[Terry Sills]

The tests suggested by John will prove whether or not the photo electric cell is working. If there is no reaction when the light beam from the exciter lamp is interrupted then there’s a circuituary problem to the pec.

[Patrick Ryan]

Thanks Terry.