VH4 issue (lose of power/ strange noise tic-tic)

[Vinz]

Hi everyone,


I'm Vincent and I'm an happy new Diezel VH4 owner. I bought my VH4 and a Custom (Frontload G12K100) Cab 412 Diezel 4 month ago, since I'm so happy. This amp and this cab kicked and still kicking my ass so strong love it !
I love so much the tone of my amp, I lose my word to describe my pleasure when I turn on all my Diezel stuff. I waited a long long time to have money to buy my dream amp and now the dream come true.

But since a couple of month I have an issue with my amp and that make my really sad indeed I'm completly addict to my tones.


So the trouble come with an huge lose of power. In Chan1 the sound is barely audible, the others chan2/3/4 sound like dirty clean sound.
Sometime the trouble is different so that I just lose power but tones stay "normal" but to play with my drummer I have to put the master volume to 12 o'clock as 9 or 10 as usually. But besides I have some "tic- tic" which i can heard in the sound sometime this "tic" became huge "pok".


I try many guitars and cords the troubles are the same, sometime it work sometime it doesn't work, this is the reason why I lose my time to go in the store where i bought my amps (a shop near Caen in France) go and go back give me a 200 kilometer travel multiplicate by 2 one time to bring the amp one other time to tack it back...

ABOUT MY RIG:
I use a DamageControle Timeline in my serial loop, a Boss Reverb in the parallele loop and a gate pedal G-string ISP technologie this one is after the guitar and in serial loop just before the delay pedal.
About the control I use an Roctron Midi Mate connect in the VH4 midi IN (7 pin's cable) and another midi cable in VH4 THRU (5 pin's) to the Timeline pedal delay (I'm going to put the chaining diagram when I have time to do it)



Thank to read and answer to this message every help will be really appreciate

Vinz
-----------------------------------
EDIT at last but not least :
I found this tread again when i realize i never edit it to say the problems was solved. The amp go back to Bad Staben and he came back and works now really great !!! I love soooo sooo much my amp i never looking for an another one just improve my rack with a furman et effect etc. So thank to all Diezel crew to help in this story.

Diezel amp rules !!!

 

[Vinz]

Hi,

me again there is my chaining map

My serial number is 080939 it was made/check (I don't know) by Lars.

MAP KEYS
Green =>Midi cable
Blue => Jack cords
light blue => Serial loop
Orange => Jack cords in thru input to the tuner
Red => special cords between cabs and power amp
purple => Parallele loop

 

[Peter Diezel]

Welcome to the forum

Since Your amp is from 2008 it seems to
be a tube issue. Please contact the dealer
or Diezel France first.

Best,
Peter

 

[Vinz]

Hi Peter,

Thank you for your answer, I'm glad to be here in this forum with you and the other Diezel's Users.

I'm going to follow your advice and I'll contact Diezel France. My approach was that I wasn't sure about my chaining (I thought about the using of Timeline in serial loop and ISP G-String about le linelevel after the pré-amp but it's looks good).

I take the opportunity to thank you for all you had made every amps are a master piece.

Best regards,
Vincent

 

[i.ak]

Im 99% sure this is a tube issue.

 

[Ventura]

Plug direct in and lose all the peripheral stuff - just guitar > cord > amp > cord > cabinet. Test drive this set up and see if you're experiencing the same issues. If so, it's 99% tubes - and ya might as well go with new preamp tubes while you're at it. Just make sure it's biased correctly and the right tubes are used.

Good Luck,
Uncle Mo

 

[Vinz]

Hi guys,

@Ventura, hell hey! You're right I mean and it is what I did firstly when the problems came. But that didn't solved my issue, so I contacted Diezel France as Peter told me who is actually represente by a very nice guy. We have programed an interview by phone to try to figure it out.

I will let you know what that gave.

I take it easy, because I'm not alone here, I share my passion with all people who deal with Diezel's brand and with you guys who answered to this topic.

Thanks all.

 

[Vinz]

Hi,

So after some hours passed with tech and Diezel France etc etc Now I have more information about my trouble. Long story, but I'm going to make it shorter as i can.

Firstly the amp was made in 2008 but I bought it on the end of 2011 as a new one I mean unused. It wasn't bought with Diezel France and the shop (or the dealer wich is the same thing) bought the amps in Belgium (according to the seller because when he bought my VH4 nobody was in charge of Diezel France).

So about the tech part. I know a very very good tech, and yesterday he came to my studio to try to understand what is wrong in this amp. We tested the old tubes they are tired but they work, to be sure we replaced them by new one. The amp seems to be working after, he left me and I re place the head on my 412 in the studio, I test one more time and the amps don't work.....

At the moment I feel like i'm going to be crazy but I stay cool....lol

The tech come back because I call him back, And know we know that is not the tube. we work on it and we try to figure it out.
The problem come from slot/plug of the V4 (it write T5 on the board) when you move the tube in the slot) the sound come and go and you can hear huge pok.
We stop here because the amp is under waranty. We have no new slot and the board is too complicated for us ;-)

Now what I suppose is this trouble was the reason why the midi chip sometimes goes crazy because this contact failure induce glicht which is send wrong information.
That the reason why 2 month ago when I brought back my VH4 to the shop where I bought it because I had problems the only thing it doesn't work with the tech was a midi malfunction. He changed the midi chip but the problem still there.

I have a meeting with the dealler next friday.


Vincent

 

[Peter Diezel]

Dear Vinz,

you also can send the amp to Bad Steben or to
Diezel France for professional service.

The tube socket don´t has to be replaced.

UNPLUG THE AMP !!! and bend the clamps inside
the tube socket a bit to get contact.

At least I don´t believe the "tic tic" noise is caused
by this socket.

Cheers,
Peter