FS: Tubalizer - damaged.

nodiak · 27th May 2007, 06:02 PM

This Tubalizer was damaged and quit playing after i inserted a ps in reverse polarity.
After email conversation with the makers they wrote: "The only components burnt are the 2 electrolytic capacitors and the 7608 regulator."
I know nothing about the regulator, but the caps are 1000uF/25 volt.
I put it aside and never got to repairing it. I can only assume they are correct.

Sold as is with no tube (6sl7) for $25, plus shipping from zip code 95521, usa. Prefer paypal and I'll absorb fees.

Thanks, Don

ymwong · 27th May 2007, 06:14 PM

I will take it. Please let me know the total shipped to 95070.

thanks.

nodiak · 27th May 2007, 08:05 PM

ymwong,
Varies $4-6 for shipping, so $29 total works for me. If that's ok you can do paypal to: nodiak@sbcglobal.net .
Thanks, Don

Sonusthree · 27th May 2007, 08:06 PM

Quote:

Originally posted by nodiak
..... they wrote: "The only components burnt are the 2 electrolytic capacitors and the 7608 regulator."
I know nothing about the regulator, but the caps are 1000uF/25 volt.
I put it aside and never got to repairing it. I can only assume they are correct.

Should be a very easy fix if no tracks are burned. The circuit contains only cheap and common components. It also works with 6SN7.
The electrolytics don't like reverse voltage so I would expect them to be the problem.
The regulator is a commonly available part too.

What did you think of it when it was working??

I have one of these and have drawn out a schematic ........

nodiak · 27th May 2007, 08:34 PM

Good tone, but some hum that increased with bias adjustments. Seemed to possibly be a ps compatibility problem as the unit is from Europe and I'm in usa. The ps they sent with it didn't work here at all (don't remember the problem, this was a year ago), so I tried a Radio Shack (273-1776), but I screwed up and had polarity reversed on the removeable tip. It actually played a while before dying.
When I told them about all this they said they'd discontinued selling their ps to usa customers. I dropped the project so didn't come to a definite ps solution. At least it did help me learn I may generally like octals for preamp, I collected several tubes for rolling so I liked it that much. It's a nice simple idea that I thought helped flesh my gainclone out.
Don

Sonusthree · 27th May 2007, 09:42 PM

It's good to hear other opinions since there aren't many reviews on the net. I've had no hum with any supply so far but It did clip very badly until I increased the supply voltage to get more headroom.

When replacing the caps see if you can get higher voltage equivalents in there. It would be a tight fit though! The caps (voltage) and the regulator's (heat) are the only things that limit the possible supply voltage within reason of course. I have used mine stock with 24V but obviously the 25V caps are a bit close to their limit for comfort!

I'm in the middle of taking the regulator off-board (with separate supply) and changing the caps to allow up to about 40V DC.

Best regards,
Martin.

ymwong · 28th May 2007, 06:09 AM

Hi Don,

Please check you email for PayPal payment confirmation.

Thanks...ym

nodiak · 28th May 2007, 02:37 PM

Tubalizer has sold.
Thanks ymwong.

nodiak · 29th May 2007, 08:40 PM

ymwong,
Tubalizer is on it's way, should reach you by Friday.
Thanks, Don

27th May 2007, 06:02 PM	#1
nodiak diyAudio Member Join Date: Nov 2004 Location: really northern cal. coast	FS: Tubalizer - damaged. This Tubalizer was damaged and quit playing after i inserted a ps in reverse polarity. After email conversation with the makers they wrote: "The only components burnt are the 2 electrolytic capacitors and the 7608 regulator." I know nothing about the regulator, but the caps are 1000uF/25 volt. I put it aside and never got to repairing it. I can only assume they are correct. Sold as is with no tube (6sl7) for $25, plus shipping from zip code 95521, usa. Prefer paypal and I'll absorb fees. Thanks, Don

27th May 2007, 09:42 PM	#6
Sonusthree diyAudio Member Join Date: Dec 2005 Location: Brighton,UK	It's good to hear other opinions since there aren't many reviews on the net. I've had no hum with any supply so far but It did clip very badly until I increased the supply voltage to get more headroom. When replacing the caps see if you can get higher voltage equivalents in there. It would be a tight fit though! The caps (voltage) and the regulator's (heat) are the only things that limit the possible supply voltage within reason of course. I have used mine stock with 24V but obviously the 25V caps are a bit close to their limit for comfort! I'm in the middle of taking the regulator off-board (with separate supply) and changing the caps to allow up to about 40V DC. Best regards, Martin. __________________ Martin + + =

28th May 2007, 02:37 PM	#8
nodiak diyAudio Member Join Date: Nov 2004 Location: really northern cal. coast	SOLD Tubalizer has sold. Thanks ymwong.

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27th May 2007, 06:14 PM	#2
ymwong diyAudio Member Join Date: Jan 2003 Location: california	I will take it. Please let me know the total shipped to 95070. thanks.

27th May 2007, 08:05 PM	#3
nodiak diyAudio Member Join Date: Nov 2004 Location: really northern cal. coast	ymwong, Varies $4-6 for shipping, so $29 total works for me. If that's ok you can do paypal to: nodiak@sbcglobal.net . Thanks, Don

27th May 2007, 08:34 PM	#5
nodiak diyAudio Member Join Date: Nov 2004 Location: really northern cal. coast	Good tone, but some hum that increased with bias adjustments. Seemed to possibly be a ps compatibility problem as the unit is from Europe and I'm in usa. The ps they sent with it didn't work here at all (don't remember the problem, this was a year ago), so I tried a Radio Shack (273-1776), but I screwed up and had polarity reversed on the removeable tip. It actually played a while before dying. When I told them about all this they said they'd discontinued selling their ps to usa customers. I dropped the project so didn't come to a definite ps solution. At least it did help me learn I may generally like octals for preamp, I collected several tubes for rolling so I liked it that much. It's a nice simple idea that I thought helped flesh my gainclone out. Don

28th May 2007, 06:09 AM	#7
ymwong diyAudio Member Join Date: Jan 2003 Location: california	Hi Don, Please check you email for PayPal payment confirmation. Thanks...ym

29th May 2007, 08:40 PM	#9
nodiak diyAudio Member Join Date: Nov 2004 Location: really northern cal. coast	ymwong, Tubalizer is on it's way, should reach you by Friday. Thanks, Don

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