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Messages - ohmy!!

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1
Tubes and Hybrids / Re: Peavey Heritage VTX ..uh oh..
« on: September 01, 2010, 09:50:28 PM »
 ;D It would seem so.  Anyhow I think it's all good now, I played it for hours on end today and cranked it up really loud to test it (about half-way on both channels combined with a distortion pedal).

2
Tubes and Hybrids / Re: Peavey Heritage VTX ..uh oh..
« on: September 01, 2010, 02:15:43 AM »
The tubes were a little loose.  I also took the board out to check the soldering.  One of the driver transistors needed to be soldered better, it also had a huge dead bug stuck to the pins  :o.   Transistor  Q6 was also a bit loose.  So far it's playing normal now, actually sounds a little different than before.  Hopefully it will stay that way.  I'll clean off the contacts on the tube sockets for good measure.

3
Tubes and Hybrids / Re: Peavey Heritage VTX ..uh oh..
« on: August 31, 2010, 11:26:29 PM »
Can't find my digital meter. I did notice though, that one of the tubes has bit of a blue glow to it and when it starts getting fuzzy and lowering volume that the blue glow dies down.  I tapped on a couple of the tubes a little bit and the sound returned to normal, the blue glow on the one tube returning as well.  Maybe bad tube and/or bad driver transistor?   :-\

4
Tubes and Hybrids / Re: Peavey Heritage VTX ..uh oh..
« on: August 31, 2010, 09:09:31 PM »
Pulled the resistor out completely, same issue. Reads below the zero, just as if I put the two probes together.  I need to find my digital meter.

5
Tubes and Hybrids / Re: Peavey Heritage VTX ..uh oh..
« on: August 31, 2010, 08:56:09 PM »
I have the amp unplugged.  It's measuring other resistors in there, but it's off by a bit (the 100ohm is measuring at 80 and the 150ohm measuring at 130-140). The meter could be off by a bit.  If I flip it to volts the needle doesn't move at all.  Then again I couldn't measure the voltage on these if they're supposed to be 20-40mv, my meter's selection for volts starts at 10.

6
Tubes and Hybrids / Re: Peavey Heritage VTX ..uh oh..
« on: August 31, 2010, 07:56:31 PM »
When I measure the ohms of those resistors, the meter's needle just drops down below zero.

7
Tubes and Hybrids / Re: Peavey Heritage VTX ..uh oh..
« on: August 31, 2010, 02:50:22 AM »
Well I had Sovtek 6L6 WXT+ tubes in there before and now I have the Ruby Tubes 6L6 since replacing the transistors Q6,Q7,Q8,Q9.  The tubes appear to be fine visually, but that doesn't really mean anything I guess. I'll have to take it apart and check those voltages later.  For the last hour or so I've been playing it and the amp has been fine. 

Thanks

8
Tubes and Hybrids / Re: Peavey Heritage VTX ..uh oh..
« on: August 31, 2010, 01:27:29 AM »
Maybe that's not the problem then?  Seemed like when I'd replace it, the amp would go back to sounding right.

I just switched the amp back on a bit ago and it all of a sudden sounded normal, then after about 15 minutes went back to sounding all fuzzy and the volume dropping and raising.  ???

9
Tubes and Hybrids / Re: Peavey Heritage VTX ..uh oh..
« on: August 30, 2010, 11:24:57 PM »
Here's what I have.  Still can't find the original's pin out.

http://www.fairchildsemi.com/ds/MP%2FMPS6531.pdf

10
Tubes and Hybrids / Re: Peavey Heritage VTX ..uh oh..
« on: August 30, 2010, 10:51:12 PM »
Do you know the pin out of the originals? I can't seem to find the info.

11
Tubes and Hybrids / Re: Peavey Heritage VTX ..uh oh..
« on: August 30, 2010, 09:41:53 PM »
Hate to bring this thread back, but.. Q6 and Q8 transistors keep dying.  I'll replace them and after a good 3-4 hours of playing the amp will just start to sound like some kind of awful fuzz monster with volume jumping up and down.  I've replaced them like 3 times now.  Any suggestions as to why this is happening?


12
Amplifier Discussion / Re: check out this new SS amp from Retro
« on: August 23, 2010, 03:19:48 PM »
Whoa!  That thing sounds really great.

13
Amplifier Discussion / Re: Peavey XXL repair!
« on: August 10, 2010, 05:26:59 PM »
Yeah the sweep on the phaser is what makes the heritage amp special, a lot of people won't play it without it.  I was running the XXL preamp through the poweramp on it. It doesn't really match that well with it though (when you crank it loud its not bad), I think the XXL sounds better with its own poweramp now that I'm using it. 

14
Amplifier Discussion / Re: Peavey XXL repair!
« on: August 10, 2010, 01:51:33 PM »
Definitely, even through the 2x12 eminence legends I have it sounds much better at low volumes.  Of course I can keep using these during the day when nobody's home and just blast it, which I've been doing the past 30 minutes or so.  I'll probably go for a 1x10 or 2x10 for lower volumes like you said. This thing really has a lot of different tones you can pull out of it between the watt selector and damping switch (and the 9 different channel selection).  When you switch the damping down to loose it sound a lot more tube-like. It's pretty cool!  :tu:

The 3 clean channel selection on it are basically all different sounds I could get out of my Heritage clean channel.  Honestly, they probably could have had all the cleans in one channel and added a parametric like on the heritage and still have the same sounds. The classic selection under the lead channel also sounds like the heritage's lead channel.  I'm debating whether to sell the heritage now or not, but I'll probably keep it.

15
Amplifier Discussion / Re: Peavey XXL repair!
« on: August 10, 2010, 12:35:38 PM »
Now that you say that, as I'm messing with it now it feels a little loose compared to the other switches so I'll take it apart. 

Looks like it had popped off before, it's missing a metal piece in the switch that bridges the prongs for selection.

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