IF Discriminator Transformer for Marantz 2325?

[ampexperts]

I'm servicing a Marantz 2325 that has a problem in the IF discriminator. Closer inspection revealed that the slug in the IF discriminator transformer is shattered/cracked radially in several places.

To properly effect a repair, this will need replacement.
I am looking for any leads to a suitable replacement. Thanks!

 

[w5jag]

Do you have any dimensions on the slug? Dan's Small Parts has threaded ferrite slugs, 5/16L x 3/16W at 10/$2.50 right now, and quite a few other coils that might have a suitable donor slug.

If you have a picture of the xfmr, or some specs, I might have a nos one. I know I have ratio transformers, not sure about discriminator, and I'm guessing they are 10.7 MHz.

Win W5JAG

 

[ampexperts]

No idea what the dimensions are. Or what type of core material it's made of. All I can state is that a 1/16" Allen key will fit it. The transformer is a typical discriminator IF transformer used in Marantz and some other brands.
I'm recovering from a bad flu for the past week. I can't lift of move anything for a while. But when I feel better, I'll try to get some photos and dimensions.

 

[DF96]

It probably broke when someone used an Allen key on it? Only plastic tuning wands should be used. Ferrite or dust cores are very brittle.

 

[ampexperts]

Possible. The "greenee" hex tool in my alignment kit is the size I use for these transformers, but this one will not turn. It slips. Because the cracks have allowed pieces of it to push away from the center of the hex opening.

 

[DF96]

You need to use pliers with tiny prongs to break up the core and remove it. Then replace the core.

 

[Kay Pirinha]

...and be prepared for an IF re-alignment...
Best regards!

 

[davidsrsb]

I trim down a plastic toothpick to fit the slot in these cores. Fractured cores are common