Help with transistor identification

[Sparky1]

These are out of a Sylvania RQ3748... Any help with identification and possibly replacement substitutes would be gratefully appreciated

 

[cademan]

Hi, just curious, are they bad or shorted?

Personally I have never needed to order any Motorola transistors for anything I have ever worked on. I have always been able to find the original parts with old amp and receivers I have repaired in the past.

 

[Tala Mink]

I think this is the datasheet for those motorollas https://www.mouser.com/datasheet/2/68/2n3766_3767-1368149.pdf

This Ebay post for Motorola 7526 also lists it as a 2N3767 so that how I found it.

I'm pretty sure that MJ21195 for 7539 and MJ21196 for 7526 would be good replacements.

 

[Sparky1]

Hi, just curious, are they bad or shorted?

Personally I have never needed to order any Motorola transistors for anything I have ever worked on. I have always been able to find the original parts with old amp and receivers I have repaired in the past.

Shorted. And also took out a few other transistors on the driver board which I cannot identify either. .

 

[cademan]

Shorted. And also took out a few other transistors on the driver board which I cannot identify either.

Bummer!

 

[gadget73]

I suspect the 7526 and 7535 are date codes for mid 1975

part number is likely 684-2

Vintage Sylvania: Receivers: RQ-3748: Downloads has the service manual

handily it has this chart inside which should help figure out a workable sub