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Conrad Johnson Premier 140 fuse is blown

Hi Audiogoner.
I need your advise on what I should do now.
This morning, my amplifier’s fuse has blown on the left side while listening to music. 
Should I change the fuse and power it back on or should the amp be checked up by a technician?
 Thanks for the advise if any. I have no knowledge on electronics.
Calvin
dangcaonguyen
tooblue
1,927 posts
 
Put a cheap fuse in and retry, worst to happen is it will blow it again, then call the tech.
nolacap
84 posts
 
Change the fuse and see what happens. The fuse is there to protect the unit. If it blows again, the amp won't be damaged but you should then get it checked out.
three_easy_payments's avatar
three_easy_payments
2,097 posts
 
Straight from the CJ Premier 140 manual:

What happens when the fuse blows? If one of these fuses should blow, it usually indicates a marginal output tube (one of four for each channel odd numbered tubes for the right channel, even numbered tubes for the left channel) and an attempt should be made to identify and replace it, by either (a) replacing the fuse and turning on the amp while watching the output tubes carefully; look for a bright white or blue flash inside the tube. If nothing happens, then (b) lightly tap the output tubes one by one with the plastic handle of a screwdriver while watching for flashes inside the tube. If efforts to identify the bad tube fail, the best course of action is to replace both tubes in the channel that blew the fuse. If the tubes are over two years old, or have more than 1,500 hours on them, a complete replacement tube set is probably in order.

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