Marantz 1040

[wlhd1610]

Your pics are a little blurry.

Here's some pics of mine...

The pilot lamp is pretty straight forward.
Same two lead lamp as used for dial pointer in many Marantz receivers.

It connects directly to the green transformer leads on bottom of power supply board.

Here is the filter cap wiring....

I marked the (-) white wires and (+) red wires cap orientation.

Notice how the + lug of the top cap and the - lug of the bottom cap are connected to the common chassis strap.

 

[avionic]

as well as 2 x 2,2k resistors that are not measuring up.

I could see those two 2.2KΩ burning up due to the cap thing.

 

[JRM]

Your pics are a little blurry.

Here's some pics of mine...

The pilot lamp is pretty straight forward.
Same two lead lamp as used for dial pointer in many Marantz receivers.

It connects directly to the green transformer leads on bottom of power supply board.

Here is the filter cap wiring....

I marked the (-) white wires and (+) red wires cap orientation.

Notice how the + lug of the top cap and the - lug of the bottom cap are connected to the common chassis strap.

I see that. Avionic pointed it out to me as my error. I have the cap with the whites wires backwards. Gonna change both caps again and everything on power supply board jus to be safe.

 

[wlhd1610]

Also build yourself a simple "dim bulb tester" (DBT) to do your testing.

It will save you (and your Marantz's) a lot of grief.


Bob

 

[petehall347]

Ok caps did leak out of a bulge on the base and not to mention the smoke. Here are the pics of it now. I'm really hoping I can save this situation

cant see pics too well ..take more straight on ....did you add the extra wires ?

 

[JRM]

A

I could see those two 2.2KΩ burning up due to the cap thing.

Would they cause the transistor to test short?

 

[petehall347]

until anyone understands +- supplies its easy to assume both negative terminals connect together .

 

[JRM]

cant see pics too well ..take more straight on ....did you add the extra wires ?

HI Pete. Nothing added. Only replaced the caps

 

[avionic]

Would they cause the transistor to test short?

In circuit or out of circuit ?

 

[JRM]

until anyone understands +- supplies its easy to assume both negative terminals connect together .

I didn't think to even look for that and just assumed. I am so grateful I came here.

 

[JRM]

in

In circuit or out of circuit ?

In Circuit. Didn't want to try anything further unless I had a clue which you have generously handed to me on a silver platter

 

[avionic]

KSC2383 for 2SC1509.( HB01 )

https://www.mouser.com/ProductDetail/ON-Semiconductor-Fairchild/KSC2383YTA?qs=JV7lzlMm3yJNKQVlvFWlyg==

 

[avionic]

In Circuit.

Retest out of circuit..

 

[JRM]

Retest out of circuit..

Perfect. Gonna try that and I'll keep you posted on how it goes. Avionic Thank you so very much for all the help so far. You have no idea how greatful I am.

 

[avionic]

which you have generously handed to me on a silver platter

I try to keep it pithy..

 

[avionic]

You have no idea how greatful I am.

Wait til you get bill...LOL

 

[cwh]

Mouser cart includes new filter capacitors? Snap in, maybe 35/40mm? You'll have to measure.

 

[avionic]

One thread..One topic..
https://audiokarma.org/forums/index.php?threads/marantz-1040.926533/

 

[Richs_Trains]

Before you fire it up again, you might want to build a Dim Bulb Tester and use it after any changes. I would have saved the current carnage.

 

[JRM]

KSC2383 for 2SC1509.( HB01 )

https://www.mouser.com/ProductDetail/ON-Semiconductor-Fairchild/KSC2383YTA?qs=JV7lzlMm3yJNKQVlvFWlyg==

Hi Avionic. This transistor is 80v 1A. Guys here can only supply a 80V 0,7A. Can I use it or is it a disaster waiting to happen