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SG Jolida SJ 302a time amplifier fuse.

txc500

txc500

Member
My Jolida SJ 302a tube amplifier blew a fuse last night. I thought 1channel sounded odd, and when I touched the speaker wire it blew the fuse.
I purchased this used years ago and it is always worked great. The fuse that was in it is a 6 amp. However, it looks like on the back of the amplifier it requires a 5 amp fuse. The writing is kind of unclear though, so I am looking for a copy of the owners manual or input from anyone who might have one.

ATTACH=full]1824540[/ATTACH]
 

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txc500 said:
My Jolida SJ 302a tube amplifier blew a fuse last night. I thought 1channel sounded odd, and when I touched the speaker wire it blew the fuse.
I purchased this used years ago and it is always worked great. The fuse that was in it is a 6 amp. However, it looks like on the back of the amplifier it requires a 5 amp fuse. The writing is kind of unclear though, so I am looking for a copy of the owners manual or input from anyone who might have one.

ATTACH=full]1824540[/ATTACH]
Click to expand...

The title should read "tube amplifier" not "time". Could not find a way to edit it.
 
txc500 said:
The title should read "tube amplifier" not "time". Could not find a way to edit it.
Click to expand...

So just a follow up for anyone interested. My fuse blew, I believe due to a bad EL34 tube. I isolated the tube by switching them around. I purchased a quad set of Electro Harmonix from a seller on eBay with tons of positive feedback for a very reasonable price. I'm really happy with them. Coincidentally I called Jolida to ask a question about the fuse and they said these tubes are what they use in their current amps. Seems like you can go down quite the rabbit hole with tube choices and everyone has differing opinions. These EH tubes got my amp up and running and sound great to me.
 
I have a 302 and honestly, I’ve never listened to it. I got it cheap with a problem and while trying to troubleshoot the issue it had a meltdown in one channel. It fried a PCB trace. I finally found a bad bias pot and I have repaired the amp but never put the tubes back in it as I moved onto some other projects. One day I ‘ll get it running.
John
 
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