I am looking for the Schematics for an old Marantz Model 1072 amp I am busy fixing. If you can help , please post it here.
Regards
DieMeneer
Regards
DieMeneer
Hi !
I, don't have schematic for 1072, but I have sch. for 1070.
I, don't know a difference!
But it is about 1,5Mb
regards zeoN_Rider
I, don't have schematic for 1072, but I have sch. for 1070.
I, don't know a difference!
But it is about 1,5Mb
regards zeoN_Rider
I see the two look very different , but I can have a look at it anyway. There should be similarities here anf there. Could you mail it to me?
I eventually came accross the official service manual for the 1072/1050
http://s1.e-monsite.com/2009/09/24/41852962ampli-marantz-1072-pdf.pdf
Enjoy!!!
http://s1.e-monsite.com/2009/09/24/41852962ampli-marantz-1072-pdf.pdf
Enjoy!!!
Know this is reviving an ancient thread, but it seemed neater then starting a new one 🙂
I picked up a Marantz 1072 (I got the schematics above, thanks) it's got a weird problem though, basically there's no treble *on both channels*, if you wind the treble up to full and bass on full cut, it's there, but obviously the sound barely counts as lo fi.. There's no discernible distortion or any other problem I can detect. This is via Line / tape inputs but it almost sounds like RIAA!
It's not been modded in any way. I'd thought as it sounded the same on both channels it must be the one thing they had in common, the power supply, but I've checked it all out, changed the caps but no change whatsoever.
I've not recapped the rest of the amp yet in case I'm missing something stupidly obvious, especially as I don't know if it's worth spending any time on..
Any thoughts anyone?
I picked up a Marantz 1072 (I got the schematics above, thanks) it's got a weird problem though, basically there's no treble *on both channels*, if you wind the treble up to full and bass on full cut, it's there, but obviously the sound barely counts as lo fi.. There's no discernible distortion or any other problem I can detect. This is via Line / tape inputs but it almost sounds like RIAA!
It's not been modded in any way. I'd thought as it sounded the same on both channels it must be the one thing they had in common, the power supply, but I've checked it all out, changed the caps but no change whatsoever.
I've not recapped the rest of the amp yet in case I'm missing something stupidly obvious, especially as I don't know if it's worth spending any time on..
Any thoughts anyone?
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