jtwoods4
Member
- Joined
- Dec 11, 2017
- Messages
- 11
- Reaction score
- 0
Hey guys I've got a 1985 black stripe Mesa Boogie Mark III
The amp was working fine but since the electrolytics are 33 years old I went ahead and ordered a set from Mesa Boogie.
Yesterday I changed two of the big 220uf 300v filter caps.
I also changed one of the three 30uf500v preamp caps. The reason I didn't change them all as because I didn't have enough capacitors and I had to order a few more from Mesa Boogie.
I also installed a new set of power tubes and preamp tubes that I ordered directly from Mesa Boogie.
Anyway I plugged in the amp turned it on and waited for about 5 minutes then flipped on the standby. I heard the amp make a crackling sound for about 2 seconds and then everything started working fine and I played it for about 10 minutes. Then all of a sudden the fuse blew and I lost power.
Could this be due to mixing new capacitors with the old capacitors? My soldering skills are very good and I don't think I made a mistake soldering.
Here are a couple pictures showing the Caps that I replaced, pic is before I replaced them. I made sure the polarity was correct when I replaced them.
In the picture I've replaced the 2 big ones on the right and one of the ones on the left. (There's two more big ones underneath the two on the right I still have to replace those)
The amp was working fine but since the electrolytics are 33 years old I went ahead and ordered a set from Mesa Boogie.
Yesterday I changed two of the big 220uf 300v filter caps.
I also changed one of the three 30uf500v preamp caps. The reason I didn't change them all as because I didn't have enough capacitors and I had to order a few more from Mesa Boogie.
I also installed a new set of power tubes and preamp tubes that I ordered directly from Mesa Boogie.
Anyway I plugged in the amp turned it on and waited for about 5 minutes then flipped on the standby. I heard the amp make a crackling sound for about 2 seconds and then everything started working fine and I played it for about 10 minutes. Then all of a sudden the fuse blew and I lost power.
Could this be due to mixing new capacitors with the old capacitors? My soldering skills are very good and I don't think I made a mistake soldering.
Here are a couple pictures showing the Caps that I replaced, pic is before I replaced them. I made sure the polarity was correct when I replaced them.
In the picture I've replaced the 2 big ones on the right and one of the ones on the left. (There's two more big ones underneath the two on the right I still have to replace those)