Name:    Terry
Email:   musicmanamp@yahoo.com  
Subject: Concerning transformers
Thread:  59
Time:    Sat, 9 Mar 2002 04:06:40 UTC

CharlieO--I will try answer your question with my repair experience for fifteen years.
Your HD65 has 7 LM307H's, as far I know, there are none out there to be bought.


You have 2 MR50-5 diodes on top of your power tubes. These cannot be bought. You can string some other diodes together to compensate for them. There are quite a few capacitors and chips that are impossible to find. As far as the transformers go, there are 5 different output and 5 power transformers. You can have yours rewound. Mercury Magnets will make you one. Last I checked with them, you better have a Brinks truck outback!! And you can get Schumacher to make you one. They have in the past, but are kinda of getting out of the business of making just one or two. The transformers do go out from time to time, but everybody makes a replacement for the Fender amp. No one is making a replacement for the MusicMan. So the Fender transformers must not hold up as well as the MusicMan. Keep good tubes in your amp and keep it biased correctly and it will probably last another 20 years.