Ht 100 head issue with sound

General Discussion Forum - Voice The Sound In Your Head
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roseyp
Posts: 1
Joined: Mon Feb 01, 2016 11:51 pm

Tue Feb 02, 2016 12:05 am

Hi all
I have a blackstar ht100 head and I developed a problem tonight that has me puzzled. Sent up as normal and started to play. 2 songs in and the amp sounds like its got a bad cable as the sound was in and out. Stopped playing and swapped cables. Still same issue. Tried shouting but still no luck !!
So I unplugged everything and had a single cable from guitar to amp. All OK on clean channel but on od1 and od2 sound was very quiet. So swapped out v2 for a new tube but same result. Swapped v1 and v3 also and same result ???
Is this power tube related as I can crank up clean channel and no issues but on od1 and 2 I have a very quiet sound

No fuses have blew
Any suggestions ??
Roseyp

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thephantum
Posts: 1160
Joined: Wed Jan 29, 2014 7:42 pm
Location: Virginia, United States

Wed Feb 03, 2016 1:25 am

It could be the power tubes. I remember reading someplace that the OD channel voices change characteristics of both the preamp and power amp sections. So it's possible that something in those OD voicings are causing the power tubes to expose a flaw that the clean channel does not.

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