Kenny's Marantz 3300 Pre-Amp

[laatsch55]

Got it 2 days ago. Reduced and shitty output.

 

[laatsch55]

A thermal event------as Joe calls em...

 

[NavLinear]

A thermal event------as Joe calls em...

I just might have some brand new 50 year old replacements for that terminal strip. I'm not sure how many terminals that one has in the photo but I have some 3 and 5 terminal strips in my hand right now.

 

[Ken.nelson0317]

I just might have some brand new 50 year old replacements for that terminal strip. I'm not sure how many terminals that one has in the photo but I have some 3 and 5 terminal strips in my hand right now.

I just love your avatar's. Yes when I opened it up, even a novice like me spotted the thermal event.

 

[Ken.nelson0317]

Whats the verdict Lee.

 

[laatsch55]

It's gonna cost money THAT I know for sure. Resistors will be in today. We'll get that mess on the back wall cleaned up then put it on the AP and see where else if anywhere we have to go. It's been fixed 1 or 2 times before so this may be it.

 

[Gepetto]

A thermal event------as Joe calls em...

That is a good one Lee. Probably pretty stinky.

What section of the preamp does that play a part in? The power supply?

 

[laatsch55]

Speaker switching Joe.

 

[Ken.nelson0317]

It's gonna cost money THAT I know for sure. Resistors will be in today. We'll get that mess on the back wall cleaned up then put it on the AP and see where else if anywhere we have to go. It's been fixed 1 or 2 times before so this may be it.

I knew that it was pretty bad at the speaker switching strip. Didnt realize it looked bad anywhere else?

 

[laatsch55]

No Kenny, looks good otherwise. Whoever did the work WAS NOT a hack..

 

[laatsch55]

Testing now. Preliminary THD & N is excellent.

 

[laatsch55]

THD & N Right Channel------Kenny, this puppy will go out day after tomorrow.

 

[laatsch55]

Freq Res----

 

[laatsch55]

Residual noise

 

[Ken.nelson0317]

No Kenny, looks good otherwise. Whoever did the work WAS NOT a hack..

Thats great news Lee. Do you think she needs recapped? Also do you think that the thermal event was caused by my running out of her to Lickety Split and back to her? I did that so I could run two sets of speakers?

 

[laatsch55]

Ken,,,tracking # 962223115001989

 

[Ken.nelson0317]

Ken,,,tracking # 962223115001989

Woo hoo. I miss that baby.

 

[NavLinear]

Thats great news Lee. Do you think she needs recapped? Also do you think that the thermal event was caused by my running out of her to Lickety Split and back to her? I did that so I could run two sets of speakers?

You may have PM'd Lee about this but if you rerouted the amplifier output back to a preamp input that would be a bad thing. You should diagram that one out.

 

[Ken.nelson0317]

You may have PM'd Lee about this but if you rerouted the amplifier output back to a preamp input that would be a bad thing. You should diagram that one out.

Thanks Dennis. Thats what I was doing so I could use A and B speakers. I did ask Lee about it too. So I'm gonna hook up two amps instead. What is diagraming out?

 

[laatsch55]

Nav, on that Marantz as in the Spec 1 also, there is a provision in the pre to do speaker switching. The amp out is brought back to the speaker selection board and handled from there.