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Marantz 1040

Hi Pete. I just ran through PE01 before I close up for the night. Found a few reistors not measuring up. Gonna remove them and test again.

Thanks for all the help so far. Will keep you posted
 
i wanted to make sure where it was coming from first .. doing the short earlier might have masked something in the main amp input stage .
no harm checking out PE01 though if nothing gets broken .
 
Hi Pete. Will definitely do as you suggested. Was just curious and as it was easily accessible did testing on a few. I am nowhere near knowing what I'm doing so I'd be best following your advice.

Thank you for all the time you investing in me especially knowing that you never even met me. I cannot find the words to express my appreciation.

Thank you
 
Hi Pete. Wondering if you can advise on the 2 wires that go from j706 to the screw on the heating. What is the little black device the 2 wires as attach to as i see they are broken off.

See pic attached
 

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oh crap ..that's the bias diode ..do not power on without it .. you need to find a new one or carefully repair that one .
 
Can it be repaired? Trying to expose pins are proving challenging. Any advice on how to attempt as if i try to buy I'll only get it in about 6 months from now :thumbsdown:
 
Ok. Found this on ebay which say delivery by 6 September. Please see pic attached and advise if I should order itScreenshot_20200828-221054_Chrome.jpg
 
Cool. Going to order it now and will check in when I receive it to verify correct fitting.

Guess thats my little bucket list project on hold until then.

Guess my lack of experience came at a cost:dunno:
 
Thanks Steve. Was trying that but then stopped as I thought I'll just be damaging it. Will try in the morning again to see if I can expose some wire. If I do and test on DVT, what kind of reading should I expect to see if it survives? Oh and will heat damage it as in trying to shave off with a soldering iron.

I don't mind buying the ones on ebay but just don't want to lose momentum as getting this 1040 going will be a huge achievement for me personally :crazy:
 
I don't know about heat. I used a Dremel tool for part of it, but actually, I mostly used a sharp box cutter. It was tedious, and probably took me 30-40 minutes to expose enough wire on both sides. More is better, because it would be hard to tin 1mm of wire. But 2mm will tin. Then tin the copper wire and it should solder. JB Weld to strengthen it a little, then shrink wrap and you are ready to go. I'm not sure what spec is, but you can see I got 1.09V on the diode test, which was close to the good one on the other side.
 
Thanks Steve. Was asking cos I did try the heat thing and stopped as i could feel it get really hot.

Silly me yes there is another on the other side. Let's give it a go

As Pete implied we can always learn.

You guys are amazing with all the support. Any chance you'll accept a virtual beer
:beerchug:
 
Hah! I'm not fixing teeth any more, so I can have a cold one any time I want. Temperature right now here is a humid 108. :eek: If you use a box cutter, use a new blade, and wrap all but the tip with several turns of electrical tape. I chopped up my thumb pretty good before I got smart enough to protect myself.
 
Cheers to good friends and good deeds.

Thanks for the heads up. No use trying to repair the amp with no fingers
:bigok:
Steven Tate said:
Hah! I'm not fixing teeth any more, so I can have a cold one any time I want. Temperature right now here is a humid 108. :eek: If you use a box cutter, use a new blade, and wrap all but the tip with several turns of electrical tape. I chopped up my thumb pretty good before I got smart enough to protect myself.
Click to expand...
 
Hey guys. Attempted to fix the STV -3. Can you please see attached pic of meter reading and note negative on the side with yellow dot. Other way meter doesn't read at all. Can i take it as fixed. If so I remember j706 went on pin with yellow dot. Would I be right or as usual confused again :crazy:
 

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