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Apr 18, 2025, 10:09 PM

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#21

Vintage McIntosh Amplifier Repairs, Restorations and Modifications / Re: MC225 restoration

Last post by nre - Jul 28, 2024, 06:28 AM

First thing is to dismantle it down to its bits and pieces. The brown capacitors are Mylar and age well. They do not need to be replaced but should one desire, replace with polypropylene.

The multisection cap, the Bumbleebee caps and the Al-elctrolytics must be replaced.

#22

Vintage McIntosh Amplifier Repairs, Restorations and Modifications / MC225 restoration

Last post by nre - Jul 28, 2024, 06:21 AM

MC225 for restoration and new top cover!

#23

Vintage McIntosh Amplifier Repairs, Restorations and Modifications / Re: MC40 pair for restoration

Last post by nre_admin - Jul 04, 2024, 05:22 AM

%THD v. power (WRMS), each amplifier, same output tubes.

#24

Vintage McIntosh Amplifier Repairs, Restorations and Modifications / Re: MC40 pair for restoration

Last post by nre_admin - Jul 04, 2024, 05:21 AM

Complete!

#25

Vintage McIntosh Amplifier Repairs, Restorations and Modifications / Re: MC40 pair for restoration

Last post by nre_admin - Jul 04, 2024, 05:20 AM

Recapped, power supplies replaced. All solder pins and tabs desoldered and the OEM leads removed prior to restoration.

#26

Vintage McIntosh Amplifier Repairs, Restorations and Modifications / Re: MC40 pair for restoration

Last post by nre_admin - Jul 04, 2024, 05:15 AM

Chassis bottom covers are grit blasted, chem-etched, primed and painted then backed at 105F for 2h. The pot metal badges are benched to brighten the lettering.

#27