[Jukebox-list] Re: Rockola SS amplifier FET Identification

On 3/3/23 12:57, M De Simone via Jukebox-list wrote:

A fellow jukebox repairman asked me if I knew of a substitute for this FET transistor. I do not, since I work predominantly on tube amplifiers. So I thought I’d ask the group here and see if I could help him out. It is Q18 on the “mute and squelch board” and Rockola part # 52342 and the part description is: N - Channel Junction FET.

I don't have a direct cross-reference but it looks like a common small signal JFET. Pretty sure your amp is for a model 478 or similar vintage.

2N547 or 2N5486 in TO-92 plastic case or 2N4857A in TO-18 metal case should work fine.