Hi All,
I recently picked up a fisher console and would like to restore it. I am new to tubes and would appreciate any help or advice to fix this unit up.
The console is a 1960 custom electra III. It has a 610-st chassis for the tuner, preamp and amp for 1 channel. There is a separate 30-a chassis for the other channel amp.
The thrift store had it running the night before I bought it. When it was delivered I plugged it in thru my dim bulb tested and it failed (Light stayed bright). I separated the 30-a and tested it. It passed, so I hooked it up to the pre-amp out of my reciever and listened for about 10 minutes. It sounded good.
The 610-st looks to have had some recent work. see pic. There is a new 100 ohm wirewound going from one of the can caps to the rectifier tube. This should be a 140 ohm resistor. Also some of the tubes are new.
I think this is my problem area. My plan is to recap, replace resistor, replace tube.Does this sound right?
Can I use much higher voltage rated caps as replacements? ex .047 600v orange drop to replace .047 250v cap? 40 uf 500v sprauge atom to replace 40uf 350v?
There are some black molded caps that say pyramid on them, a .022uf 500v and .01uf 600v. Is a mallory 150 a good replacement for these?
Do I need to replace these molded caps or just the electrolytics?
Thanks
I recently picked up a fisher console and would like to restore it. I am new to tubes and would appreciate any help or advice to fix this unit up.
The console is a 1960 custom electra III. It has a 610-st chassis for the tuner, preamp and amp for 1 channel. There is a separate 30-a chassis for the other channel amp.
The thrift store had it running the night before I bought it. When it was delivered I plugged it in thru my dim bulb tested and it failed (Light stayed bright). I separated the 30-a and tested it. It passed, so I hooked it up to the pre-amp out of my reciever and listened for about 10 minutes. It sounded good.
The 610-st looks to have had some recent work. see pic. There is a new 100 ohm wirewound going from one of the can caps to the rectifier tube. This should be a 140 ohm resistor. Also some of the tubes are new.
I think this is my problem area. My plan is to recap, replace resistor, replace tube.Does this sound right?
Can I use much higher voltage rated caps as replacements? ex .047 600v orange drop to replace .047 250v cap? 40 uf 500v sprauge atom to replace 40uf 350v?
There are some black molded caps that say pyramid on them, a .022uf 500v and .01uf 600v. Is a mallory 150 a good replacement for these?
Do I need to replace these molded caps or just the electrolytics?
Thanks