EF500p parts. Dealers , repair center?

Douglas R. Allen

Sophomore
Jan 11, 2011
297
15
18
Maine USA
Not sure where to post this this but I need some a part for my ef500p.

I have a EF500p that the volume knob has been hit on. It does work but there is some noise, wobble now in it. Its to the point where I just don't trust it any more.
Rather than return the input circuit board for repair could I just purchase a replacement board and swap it out?
Its pretty straight forward as far as replacement. Disconnect ribbon from amp module and desolder black wire from circuit board. Disconnect screws from xlr and inputs nuts. Replace.
I would like the whole ribbon to be on so the replacement would be easy.

Would anyone know part No. and Price / Availability?

Thanks;
Douglas R. Allen
 
Not sure where to post this this but I need some a part for my ef500p.

I have a EF500p that the volume knob has been hit on. It does work but there is some noise, wobble now in it. Its to the point where I just don't trust it any more.
Rather than return the input circuit board for repair could I just purchase a replacement board and swap it out?
Its pretty straight forward as far as replacement. Disconnect ribbon from amp module and desolder black wire from circuit board. Disconnect screws from xlr and inputs nuts. Replace.
I would like the whole ribbon to be on so the replacement would be easy.

Would anyone know part No. and Price / Availability?

Thanks;
Douglas R. Allen

I suspect the Yorkville parts department would be a possibility.


Sent from my iPad HD
 
Re: EF500p parts. Dealers , repair center?

Any outcome on this?
I tried before to buy amp modules from Yorkville and was told they will not sell them.
They will only repair / replace, but do not offer parts for sale.

Other than the drivers, I think Yorkville uses 'off the shelf' parts to build their electronics. Anyway you can get the knob values and then hit up like Parts Express/Mouser/ type people.
 
Re: EF500p parts. Dealers , repair center?

Just a follow up.
Part came in. Just cut the 3 wire ties that hold the wires together that go to the power amp section. Unplug black wire from circuit board that is plugged into the power amp section. Unplug ribbon from power amp section that goes to the circuit board.
Remove screws and nuts on inputs and remove circuit board. Desolder knob. It has 3 pins and 2 clips on the side as hold downs.
Replace and reinstall board.

The horn driver and woofer are from Italy. Looks like a 12 inch magnet measured top to bottom on the 15 inch woofer with a 6 inch magnet with a 3 inch voice coil for the horn driver.

Solid, well built box.

I'd give the repair about a 3 1/2 as far as it being difficult. (pretty easy)

Douglas R. Allen

EDIT: I wanted to add that the new knob shaft was longer than the old one. Before installing be sure to snip it a little shorter to match the old knob !
 

Attachments

  • Master Volume Repair 01.JPG
    Master Volume Repair 01.JPG
    175.1 KB · Views: 0
  • Master Volume Repair 02.JPG
    Master Volume Repair 02.JPG
    105.1 KB · Views: 0
  • Master Volume Repair 03.jpg
    Master Volume Repair 03.jpg
    199.3 KB · Views: 0
  • Master Volume Repair 04.JPG
    Master Volume Repair 04.JPG
    67.5 KB · Views: 0
  • Master Volume Repair 05.JPG
    Master Volume Repair 05.JPG
    132.9 KB · Views: 0
Last edited: