Nikko STA 5010 Issues...

[coelacanthy]

Greetings stereo experts!

I am having a few issues with my Nikko STA 5010. The right channel is the issue and can be sporadic at best. Normally toggling the input selector would reengage the right channel, along with reseting the fuse at times. I am now getting nothing and the fuse just clicks when depressed. Two questions, does this sound like the fuse is blown and What would fix the issue of having to toggle the input selector? Does that sound like it needs a deoxifying?

I love this receiver, my dad got it out of storage when I was in high school and have had it on and off now for 20 years. Please help.

Edit: It should be noted, before the click sound went into action the last I depressed the circuit breaker for the channel it emitted an awful crackle immediately after which went on for a little while.

 

[avionic]

Welcome aboard...

 

[avionic]

along with reseting the fuse at times.

Which fuse are you resetting ?

 

[avionic]

What would fix the issue of having to toggle the input selector?

Probably some CAIG Deox-it...

 

[avionic]

Post a photo of the resettable fuse or circuit breaker your referring to.

 

[avionic]

How long have you had this problem ?

 

[coelacanthy]

Which fuse are you resetting ?

The secondary circuit breaker for the right channel. It's strange, when I use one of set speakers I get a hum from the right channel and I get nothing from another.

 

[coelacanthy]

Post a photo of the resettable fuse or circuit breaker your referring to.

 

[coelacanthy]

How long have you had this problem ?

The toggling of the input selector has always been a thing, but it was very seldom. I didn't have the receiver for a few years and since acquiring last year it has been like this.

 

[avionic]

Have you tried the headphones ?

 

[avionic]

Post a photo of the wire connection ( if possible ) of the two large electrolytic capacitors 3300µf/35vdc ..

 

[coelacanthy]

Have you tried the headphones ?

Yes, and normally the right channel is the issue in that regard as well.

Just noticed the audio is much more faint now even on the left channel...

 

[avionic]

Need to check out the power supply to the amplifiers.

 

[coelacanthy]

Post a photo of the wire connection ( if possible ) of the two large electrolytic capacitors 3300µf/35vdc ..

I had this on my phone taken from when I cleaned it a few months back. does this help?

 

[coelacanthy]

Need to check out the power supply to the amplifiers.

I switched speakers and now the left channel is fine again. I was using these smaller Teac speakers with a maximum input of 15w and impedance of 4Ω. When I went back to the 100w 8Ω the left channel was fine again. Could those smaller teac speakers have blown something if they weren't rated right?

 

[coelacanthy]

OK, now I'm just getting a hum from the right channel. Any ideas for a fix would put me over the moon.

 

[avionic]

Could those smaller teac speakers have blown something if they weren't rated right?

Could be...

 

[avionic]

OK, now I'm just getting a hum from the right channel.

Which speakers ?

 

[avionic]

I had this on my phone taken from when I cleaned it a few months back. does this help?

I would like to see the underside of those two large caps..

 

[coelacanthy]

Which speakers ?

The kenwoods, which are the ones I previously used on my 2000s Phillips. I never the Teac before but they had a silver and wood color scheme and matched the Nikko nicely...bad idea on my end. It should be noted, left channel sounds great with these speakers on the Nikko.