Relay replacement

[Chrisr3521]

Looking for a replacement relays for phono stage switching on a Sony TA-F7. The original relays are KGS branded model 21124. They look like there 24v. I'm looking at replacing with Panasonic AGQ20024, physically smaller but only switching the signal on and off.

Any thoughts?

2021-06-15_04-57-07 by chris reddish, on Flickr

 

[NareshBrd]

It is marked as a two pole relay, which is common, Omron should be available.
See in schematic for relay voltage, some makers say their coils work 3-28 volts.
Better put two pole, single pole won't stop back voltages to and from whatever is connected.

 

[davidsrsb]

From the size, I suspect that those are reed relays inside the cans

 

[NareshBrd]

Reed relays would be sealed against atmospheric degradation, so would not affect the tiny phono stage signal.
Clever idea, if true.
KGS relays does not turn up much, so I feel that maker is closed or taken over.

 

[Chrisr3521]

Height is an issue as the kgs relays are relatively flat at 7mm

Here's the product page for the Panasonic relay, it is a dpdt relay, sutible?

 

[Mark Tillotson]

Screening cans are there for a reason, perhaps they can be retained and new reeds go in?

 

[davidsrsb]

If those capacitors are for the relay power, I hope that it is not 24 V with 25 V capacitors

 

[NareshBrd]

DPDT will work, use the common and NO contacts.
As for screening, see if the cans are earthed, if yes, take off the old cans to cover the new relays...or make out of thick aluminum foil or whatever is handy.