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My 103 is eating mains fuses. I have retensioned the tube sockets so they are brutally tight but im popping fuses. I did notice however that the mains fuses I have are only 250 v @ 6amps, they should be 400, yes? and would it make that much difference?

IIRC, most I've seen are also rated 250v.

Have you tried a SLO-BLO 6A in that position? Does the fuse tend to pop right away, or after some playing?


Dave

After some abuse

I have all new ceramic style tube sockets sitting in my desk but I have been waiting to see what happens. I like these ceramic ones better because the clips inside are not like the typical but completely wrap around the tube pin and easy to adjust and there is no bakelite to wear out.

Ok so it seems the mystery has been solved. Automotive fast fuses wont cut it. I bought 1.5 and 3 slo blo fuses and its been running for 2 hours no problem. I have played it with the volume on kill shook the head banged it around and no popping.

Hamtone wrote:Automotive fast fuses wont cut it.

They don't make 'em like they used to, eh?

Glad that did the trick.

Dave

Automotive fuses are normally only rated for 12v. The correct fuses should be 250v. You should not need a slow blowing fuse if you're using a 6A mains fuse (this for 120v mains).

--mark

I went down to 1.5 and 3 with the slo blow for insirance and no beef at all now.

Hamtone wrote:I went down to 1.5 and 3 with the slo blow for insirance and no beef at all now.

Were all the fuses that blew from the same lot?

Dave

They may have been. I do feel better having much lower amperage fuses in place.