Incoming!!! Vox AC30CCH

[Myaccount876]

Re: Incoming!!! Vox AC30CCH

whats this and why?

On these specific amps, the standby switch wasn't thought out too well. When you flick the switch from standby to on, there's a very brief surge of current that will blow through a rectifier tube pretty quickly if you treat it like any other amp. Also (on this specific amp), the tubes are heated enough by the time the rectifier tube is fully heated, so neglecting the standby won't adversely affect tube life. This is just the AC30 reissues with a tube rectifier. Use the standby switch on most other amps or if the AC30 has a solid state rectifier.

[Wattage]

Re: Incoming!!! Vox AC30CCH

Oh well you know what I get for an Incoming thread?

An AC30 amp that wasn't worth the wait. Had a blown out Top Boost channel and a few other quirks so I had to pass on it. It is going to a good tech so maybe it'll get fixed but I am leery of taking a shot on it, seems like a can of worms.

[Nostalgic Distortion]

Re: Incoming!!! Vox AC30CCH

That sucks man, I've been there! In my case it turned out to be the jack but I had the tech do a complete overhaul (new valves, made sure it was basing itself properly, had him check the tone oil & rectifier fluid, EXE), LOL!!! He charged me $150 & I had to ship it because I don't have any techs in my area but if I just wanted him to fix the jack it probably would have been closer to $45?

I figured if I was spending $79 to ship it each way anyhow I might as well just have him do a full diagnostic well he had it? That was five years ago and I've never looked back, never had any issues since, so I'd wait & see what your tech says? It could be something simple and fairly easy/cheap to fix but I also understand why you'd be weary. They are finicky, temperamental things that pop & hiss @ you but if they weren't they wouldn't be AC's???

[zzmoore]

Re: Incoming!!! Vox AC30CCH

Not sure what you mean by "A blown out TB channel".
But that could be as simple as a tube. I had owned one of these since 2008, and just sold it a few days ago.
I have worked on several, most do to the Stand-By Switch troubles, and just one that blew a B+ dropping resistor for no apparent reason.
Any amp CAN be a lemon, but the CC Model was well made by most standards.
Good Luck With Yours

[Wattage]

Re: Incoming!!! Vox AC30CCH

Don't know how the signal path goes but there wasn't even a whisper of sound on the TB channel, Normal worked fine. If I linked the channels again only the Normal channel responded, the TB channel zero effect on anything.

The amp also seemed to have some issues with Standby, which I assumed it might.

We'll see what happens? I won't know til next year at this point since they said the amp won't be back until some time January.

[crusty philtrum]

Re: Incoming!!! Vox AC30CCH

A channel that is STONE DEAD is very likely an easy fix. It may be missing a valve, or a wire or component lead has become unattached. Intermittent or poorly-performing channels are the ones that can be tricky to diagnose.

[Wattage]

Re: Incoming!!! Vox AC30CCH

I've no doubt but they either have to have it fixed and guarantee it or give it to me at a silly price to cover my ass in case it is the proverbial can of worms