Problem with my Hartke 3500 HA.

[san_339]

Hi.

I've bought today an Hartke 3500 HA and an Hartke 4.5 xl, all new.

In the amp, that has 2 channels, the tuve channel and the solid state channel, when I play only with the solid state (transistor) there's no problem, and no noise in the back.

But when y play with the tube channel, or with both of them, there is a lot of noise in the back, and, besides that noise, there is a "crack pfff crack" noise, like if something is crunching...

Is it normal? And why in the tube channel?

 

[san_339]

Anybody can help me, with any information, please?

 

[Billnc]

Preamp tube

 

[Ayliffe]

make sure you let the tubes heat up before using the tube channel.

 

[san_339]

Preamp tube

Is the usual diagnosis for that problem?

Should I buy a better tube and put it in the amp?

 

[san_339]

make sure you let the tubes heat up before using the tube channel.

I let them about half and hour... and it's the same. I had already thought about that, but thanks a lot.

 

[arginator]

You just bought it and its giving you trouble? Bring it back.

 

[Ayliffe]

You just bought it and its giving you trouble? Bring it back.

ya if the tubes are hot and its still ****in you around, take it back.

 

[Revvv]

I have the same amp, the only noise I get is from the fan.

If it's new take it back and have them replace it with a new one.

I'm sure it's a simple problem. It's most likely the preamp tube as other have said. However, the amp is new. Let the dealer bother with it.

...and you shouldn't have to let the amp warm up at all. It should run fine due to the fact that it has a dual preamp powering a solid state main. No warm up necessary.

 

[Robbi]

I had the same problem, but like everyone else is saying, take it back to where you purchased it first.

Try making sure the tube is seated properly in the saddle. If it is, try replacing the tube. If those don't work, you might have a poor connection in the saddle or more likely a cold/bad solder joint somewhere in the tube circuitry.

 

[drpepper]

I have the same amp, the only noise I get is from the fan.

If it's new take it back...

My amp is used and I'm a born-again noob, so I can't be giving any advice out, but I had to echo this.

You should not have to deal with any issues.

 

[san_339]

I'm going to replace it.

Thanks for the advices.

 

[vinxbass]

I'm going to replace it.

Thanks for the advices.

Take it back, it's brand new.

 

[Billnc]

What you described is almost always the preamp tube, but since it's new, just take it back. Tubes can go at any time, used or new. They are usually seated pretty well in Hartkes.

 

[san_339]

One question.

As I've described, the crunchy noise is only when the tube channel is activated, so, Could be the problem of the cab or the cones? Or beeing only in the tube channel, I can rule out that option?

 

[Jay Corwin]

Gotta be the tube, or the seating of the tube, or something related to the tube. The preamp channel shouldn't have any effect on your cab unless you are completely over driving the preamp, which IME doesn't really happen on the 3500 tube preamp. Just take it back since it's new.

..and I've never had a problem with the tube in mine, hot or cold. 10+years without an issue. So take yours back.