Vintage HiFi Audio Forum

Audio Discussion => DIY => Topic started by: angelod307 on October 31, 2010, 09:33:50 AM

Title: tfm55 refurb
Post by: angelod307 on October 31, 2010, 09:33:50 AM
just got 95% of my amd recapped. ordered the wrong size caps for the middle rail, and forgot to order a small powersupply cap as well as the two in the pre-amp board. so almost there. i replaced most all of the small trasistors in the amp as well. i also found a issue were somebody replaced a tip35c with a tip36c.  i do not understand how the amps did not destruct, but it did not. it just had 98v where it should have been 56v or so. anyway, now it correct, other than a few diodes that were bad as well, i am almost done. this started with the amp having a low/small buzz in both channels. i am sooooo getting/coming  up to speed on the repair of these tfm 35's and 55's.
Title: Re: tfm55 refurb
Post by: OldiesButGoodies on October 31, 2010, 10:56:11 AM
Be interested on your report on sound improvements.  Is this your first recap?  did you use standard replacements or improved components? My first recap attempt with an old Parasound HCA-600 amp crashed and burned,  had to put the original caps back on - not sure what the heck I did wrong.