Marantz 1090 - need help on missing knob

[SaintZa]

Hi all, am new to this forum. I just acquire a marantz 1090, due to the missing knob I got it at a cheap discounted price. I have done some cleaning and testing. There is some light static sound as I turn the volume. Volume sometime soft while turning up and suddenly become loud.
Need some advice on the volume issue and also where can I find the missing knob to complete the 1090 to it original glory. Thanks all for help in advance.

 

[tonebells]

Clean the volume control with some CAIG DeOxit D5. The 1090 knobs are 36mm x 17.6mm. They are just a little bigger than the 1030/40/60/70 knobs. I think the 1030/40/60/70 knobs would look ok if you can't find the 1090s. Try a WTB in Barter Town.

 

[SaintZa]

Clean the volume control with some CAIG DeOxit D5. The 1090 knobs are 36mm x 17.6mm. They are just a little bigger than the 1030/40/60/70 knobs. I think the 1030/40/60/70 knobs would look ok if you can't find the 1090s. Try a WTB in Barter Town.

Thanks, will try to open up the casing and do some internal spring cleaning with Deoxit. I hope I can find the original knobs p/n 2963154010 it stated in the service manual and it is the same knob for Marantz 3250 when I try google it. Look like it is going to be a long wait, before I can find the knobs.

However, I cannot find Barter Town in the forum? Only Barter Town Preview.

 

[tonebells]

However, I cannot find Barter Town in the forum? Only Barter Town Preview.

Sorry, I should have mentioned you need to be a subscriber to use Barter Town.

 

[SaintZa]

Thanks. I have also tried Ebay as well, but in vain.

Sent from my SM-G900F using Tapatalk

 

[keitht]

Trouble is, a set of knobs is likely going to cost more the the amp did.
Here in Dallas I've responded to CL ads and been shocked by what
a single knob costs. Volume knob on a Marantz was going to set me back $30.

 

[SaintZa]

Yes Keitht. You are right. But it either I use the money and save up for another vintage Marantz or I restore it and keep it.

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[SaintZa]

Manage to fine 3 original knob but with some oxidation. Need 1 more to go. Wish me luck.

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[Bert 1100]

About the volume being low and then jumping up as the volume is turned up, often it is the protection relay contacts (oxidised/dirty) . I've had good long lasting results with opening the relay and cleaning the contacts, but usually a replacement is recommended.

Hold on, does the 1090 have a relay ? I cant see one on the few photos I just looked at... If no relay, then first thing to do of course is Deoxit.

 

[SaintZa]

About the volume being low and then jumping up as the volume is turned up, often it is the protection relay contacts (oxidised/dirty) . I've had good long lasting results with opening the relay and cleaning the contacts, but usually a replacement is recommended.

Hold on, does the 1090 have a relay ? I cant see one on the few photos I just looked at... If no relay, then first thing to do of course is Deoxit.

Ya will check it out. Hope it will helps.