Kenwood KA-701/7011 relay transistors

[GytisB]

Hi! Got my first Kenwood amp, and looking forward using it. Want to see if I like the sound of it or not. So far the unit works fine, but was clicking the relay really slowly. Was taking up to 30 seconds. Switching the relay for the new Omron (found recommendations on the old threads here). It does power up faster, but still takes just a bit longer than it should. Caps where replaced also. Does anyone know which of the transistors are the relay transistors? I see many people tell to swap them right away, since they go bad. Would be great if you could also point to the replacement part on digikey or mouser! Thank you!

 

[Binkman]

G'day;
Got the p/n off the board? Manual Library - HiFi Engine

 

[GytisB]

G'day;
Got the p/n off the board? Manual Library - HiFi Engine

I guess you mean the picture with the p/n? Sure, I'll attach it here. I think it should be sitting somewhere in that place, near the relay.

 

[Binkman]

I understand you are from Norway.. I don't know if you know about where to get the service manual to identify the transistor.
https://www.hifiengine.com/manual_library/kenwood/ka-701.shtml
More important is what is in the unit now? and compare to the parts list because the schematics are not good/clear. You might also open the 7011 manual, too.
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In addition we/I have no idea what else has been done or needs to be done.

 

[turboyam]

Your offender is probably that long, black one, near your green capacitor. Changed mine for a Hitachi HA12002

 

[GytisB]

Your offender is probably that long, black one, near your green capacitor. Changed mine for a Hitachi HA12002

Hmmm, can't seem to find any on mouser or digikey.

 

[Binkman]

whats the number on the transistor? you should search for equivalent or substitution.

 

[GytisB]

IC1 ___ V30-0291-10 ___ IC HA12002 (Where ___ is a spacer between ref.no, part.no, description)
Other stuff that could be an issue and something I cannot seem to find are these two:
Q17 ___ V04-0855-10 ___ Transistor 2SD855(BD)
Q18 ___ V02-0760-10 ___ Transistor 2SB760(BD)

 

[Binkman]

All Transistors. Datasheet. Cross Reference Search. Transistor Database.
You can do a cross reference.
This is about as far as I can help.. Having recently moved a week ago, I have a lot on my plate.
@avionic (should get the alert) might come by and assist.

 

[eizner23]

Q17 ___ V04-0855-10 ___ Transistor 2SD855(BD)
Q18 ___ V02-0760-10 ___ Transistor 2SB760(BD)

Any of these modern complimentary pair will work
MJE15030G/MJE15031G
MJE15032G/MJE15033G

 

[GytisB]

All Transistors. Datasheet. Cross Reference Search. Transistor Database.
You can do a cross reference.
This is about as far as I can help.. Having recently moved a week ago, I have a lot on my plate.
@avionic (should get the alert) might come by and assist.

Thank you! I'll check that website out! By the way, congratulations on moving into a new place!

Any of these modern complimentary pair will work
MJE15030G/MJE15031G
MJE15032G/MJE15033G

Oh sweet! Thank you!