deltalight
AK Subscriber
What P/N is recommended to replace the 300-ohm bias pot R722 on the Marantz 2285B Driver assy??? CTS 202X-series? They only have a 500-ohm...
Re: Marantz 2285B Bias Pot Replacement
- Thread starter deltalight
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- marantz 2285b
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KutzlerTrans
Jennie & I with Buddy and Barney.
KutzlerTrans
Jennie & I with Buddy and Barney.
That part number is missing a 0 at the end. It says 1K
I put some part numbers down below to look into.
Even though it has the 300 written there, the service manual calls it a 1K And to top that off, Some marantz units use a 2k , but the service manual says 1k, So... Can you check yours?
Bourns # 3386H-1-202LF (2K)
Bourns # 3386H-1-102LF (1K) marantz like the 2245/2275 use a 2k
http://www.digikey.com/product-detail/en/3329X-1-202LF/3329X-202LF-ND/1088273
http://www.digikey.com/product-detail/en/3386H-1-202LF/3386H-202LF-ND/1088512
Here is a selection of 500 ohm. http://www.mouser.com/Bourns/Passiv...e/_/N-9q0yt?P=1z0zlsdZ1z0spgxZ1z0x8b9Z1z0x8e0
I am guessing that 300ohms is around were the designers figure it should be. Maybe somebody could jump in and add to this.
By the way, Remember to use a Dim bulb tester on the unit before giving it full power.
John
I put some part numbers down below to look into.
Even though it has the 300 written there, the service manual calls it a 1K And to top that off, Some marantz units use a 2k , but the service manual says 1k, So... Can you check yours?
Bourns # 3386H-1-202LF (2K)
Bourns # 3386H-1-102LF (1K) marantz like the 2245/2275 use a 2k
http://www.digikey.com/product-detail/en/3329X-1-202LF/3329X-202LF-ND/1088273
http://www.digikey.com/product-detail/en/3386H-1-202LF/3386H-202LF-ND/1088512
Here is a selection of 500 ohm. http://www.mouser.com/Bourns/Passiv...e/_/N-9q0yt?P=1z0zlsdZ1z0spgxZ1z0x8b9Z1z0x8e0
I am guessing that 300ohms is around were the designers figure it should be. Maybe somebody could jump in and add to this.
By the way, Remember to use a Dim bulb tester on the unit before giving it full power.
John
Last edited:
KutzlerTrans
Jennie & I with Buddy and Barney.
I think your CTS 202x choice is a higher amp part and a lot tougher.
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