Kenwood KT-8300 help, please!

[Tromatic]

It has started having intermittent bouts of no output. All the meters and indicators continue to work, just no output. If you spin the tuning knob, everything responds normally, no output. Switch from FM to AM usually brings it back, but the Signal Strength meter bounces off the upper and lower pegs a few times.

Any ideas? The local awesome tech can fix it, I hope.

 

[petehall347]

sounds like its maybe in need of a good old switch cleaning .

 

[cademan]

And.........among other things, don't forget the relay!

 

[Tromatic]

I don't think it's the FM/AM switch. And, which relay?

 

[ryuuoh]

It's a tuner, so no relay.
Looks like Signal Strength passes through S4:
http://www.fotoalbumet.com/u/00/24/40/files/Manuals/KT-8300.PNG

 

[cademan]

Ok ok, so I am not familiar with that particular unit, and I was too lazy to look it up, but most questions asked here about sound drop-out usually pertains to amplifier/receiver output.

Guess I overlooked the part where he says he spinned the tuner dial! Whoops!

 

[petehall347]

have you tried fixed output ?

 

[EchoWars]

The 8300 (and many other Kenwood tuners) use a small reed relay for muting purposes. It is not a common failure, but the relay or the relay driver transistor could possibly have issues.

 

[Susurus]

...which explains why I leave mute off. Sometimes back on when changing stations but after getting there, switch mute back off again.

Some modders bypass mute circuits. Tempted but my 8300 ain't broke. Well the Stereo light is very dim. :scratch2:

 

[Tromatic]

The 8300 (and many other Kenwood tuners) use a small reed relay for muting purposes. It is not a common failure, but the relay or the relay driver transistor could possibly have issues.

Would that cause the signal strength meter to bang of the lower and upper pegs? I don't use the muting, anyway. Why have an analog tuner if you can't here the tuning process? Spinning the dial is half the fun.

 

[Punker X]

Would that cause the signal strength meter to bang of the lower and upper pegs? I don't use the muting, anyway. Why have an analog tuner if you can't here the tuning process? Spinning the dial is half the fun.

Could be alignment issues, or something more serious. Either way without test equipment and radio knowledge its going to be difficult to DIY this..

 

[Tromatic]

Could be alignment issues, or something more serious. Either way without test equipment and radio knowledge its going to be difficult to DIY this..

It's at a very good tech now. He's not thrilled, though. If it's power supply related he can fix it. If he can't, can I give you a ring?

 

[Punker X]

Of course... evening or weekends are best... email even better..