w5hro
Member
This is mainly for the MAC 1500, 1700 and 1900 receivers
I think most people always say to replace the electrolytic caps in these receivers, but it’s not always necessary. McIntosh used very high-quality components and often military or scientific equipment grade components. Believe it or not, many of the electrolytic caps in these old receivers are still good today and do not leak. Unless you are hearing a hum it’s best to just leave them alone until you do.
The main problem in these old receivers are with the old tubular paper caps and it didn’t matter if they were military or scientific grade. Most all of the old paper caps are leaking today and they must be replaced. McIntosh used a ton of the white Mallory paper caps below.
These were recently removed from a MAC-1700 receiver
Most are on the PC boards
Three are on this board below
As you can see most of them are on the PC boards, but not all. You will usually find one or two more on the chassis somewhere.
.
I think most people always say to replace the electrolytic caps in these receivers, but it’s not always necessary. McIntosh used very high-quality components and often military or scientific equipment grade components. Believe it or not, many of the electrolytic caps in these old receivers are still good today and do not leak. Unless you are hearing a hum it’s best to just leave them alone until you do.
The main problem in these old receivers are with the old tubular paper caps and it didn’t matter if they were military or scientific grade. Most all of the old paper caps are leaking today and they must be replaced. McIntosh used a ton of the white Mallory paper caps below.
These were recently removed from a MAC-1700 receiver
Most are on the PC boards
Three are on this board below
As you can see most of them are on the PC boards, but not all. You will usually find one or two more on the chassis somewhere.
.