Wondering if you guys can help me out here. I was playing my ht-5 the other night, put it in standby for approx 30 minutes and when I switched it back on there's just a really loud whine/hum sound coming from it.
None of the knobs do anything and even plugging out the guitar cable doesn't stop it.
I cracked it open last night and both the valves were lit up, and decided that's about as far as I could take it
Anyone got any ideas? Is it worth trying a replacement set of valves?