Kenwood KR-9050 Zener Replacement

[Rebooted]

I have a Kenwood KR-9050 receiver with some bad components on the driver board. I've already found replacements for the transistors, but the diode, D5, is bad as well. The manual says it's a YZ-040B and I can't seem to find much more info than that. Can anyone recommend a replacement for it?

 

[hopjohn]

https://audiokarma.org/forums/index.php?threads/kenwood-zener-diode-cross-reference.335639/

According to the Kenwood semi conductor manual this is a 4V 500mW Zener. Probably have to go with a 4.2V replacement as the above thread suggests.

 

[Rebooted]

Thanks, hopjohn. So, dumb question.. Are they saying that the 4v is the forward voltage or reverse voltage?

 

[hopjohn]

Thanks, hopjohn. So, dumb question.. Are they saying that the 4v is the forward voltage or reverse voltage?

Unless specially stated to the contrary, when you see an accompanying voltage rating given for a Zener diode, the implication is that figure is the Zener voltage Vz (sometimes referred to as the breakdown voltage) associated with it.

 

[Rebooted]

Awesome. Thanks again for the info, hopjohn!