Tubegarden Harvard circuit

I understand it's not an exact clone but with Dan's layout and the Fender schematic you should be able to figure it out without much trouble.
I've never seen any of Dan's kits but could probably help you if you posted the specific problem your having?
If nothing else use a process of elimination.Use all of the componnets that do match and then see what's left.If it's a transformers issue,who's the manufacturer?

 

The issues you have mentioned are still relatively simple for someone with a little tube knowledge to work out.No matter what Dan has done he has not changed basic tube design.
He has not changed the pins the plates are on or the pins the heaters are on .The addition or deletion of a bias adjust is also a simple matter.Your just subbing a variable resistor (pot) for one that is fixed.
I imagine the amp still has the grid reistors(68K) too.Dan has maybe moved them to the board,tube sockets or maybe changed the value slightly.

 

i've heard on the weber forum that tubegarden has stopped shipping amps. Even people who have paid havn't recived their amps.
Have anyone of you had problems with tubegarden?

 

Wow, how does the amp work without imputs?

Yes, I don't mean to be rude, but
I think you are in over your head. With his layout, you
should have no problem building the amp unless the
layout is missing stuff (like connection points and what
resistor goes to what eyelet or terminal to what pot,
etc.

Well the heater elements typically
work one of two ways, AC which typically doesn't
matter which wire goes where (on the correct pins)
and DC, in which you have to ensure the pos and the
neg sides (tube pins)don't change).

Oh Chit, sorry to hear that. Best to take it to a tech
and have him work it out--really. You should have a
complete layout and schematic especially if it is a kit.

Someone who has built amps and serviced them for
a while should have only slight challenges with that
kit, namely how you would like it to sound/set up.

Find someone.

Good luck and keep us informed.

 

Missed the pic, but that is not important.
Contact the seller of the kit, who ever he bought it
from, they should stand buy what they sell, or
at least get your money back.

There should be a grid stopper on the input
just for safety's sake whether on the tube pin
or on the board.

Follow this layout:
http://www.ampwares.com/ffg/schem/harvard_5f10_layout.gif

Eliminate number 3 input jack.

Print it off and double check the components
and go.

Print it off large, the lay your components out
on the paper print out and see what is missing
different.

Just don't use the heater wired to chassis ground.
Some other stuff for safety and noise reduction also.

Don't panic, do the best you can at first there are
plenty of folks here to help you out. Just make sure
you can take pictures and explain what your doing
as best as you can.

Posting the layout and comparing it to the
link I gave you should be a big help.

This is a straight forward simple build for folks
with experience, it will be more challenging for
you, but you will get there.

So find the tweed twin layout and print that off.
There you will have your two 12Ax7s and the parts
in the kit.

Probably this amp:

http://www.ampwares.com/ffg/schem/twin_5e8-a_layout.gif

Just eliminate left input 1-2 jack, tube and wiring;
shifting the coupling over to the V1 (the far right tube.
You should be fine then. Take your time and figure it
out. You've built kits so have a go.

Also don't use the 4 100K resistors and wiring
of the left 1-2 inputs and the .02 cap.

Use those values for the V1 in
the harvard amp.

I guess it uses the same 12AX7 PI and output
section of the Harvard amp if you want bright
channel at the caps on the volume 2 pot.
Also eliminate one of the 270K channel
mix resistors (from the volume pot.)

Do you have the Presence, Bass, Treble?
Then wire those in too.

His layout should be the clue.

Post it here if you can.

Good luck and have fun, take your time
and be safe.

 

Jim,
I'll be glad to post the layout on my server and post the URL if you need a place.
Ask specific questions as to what the problems are and we can help you.
Dan said this and Dan said that just don't help.
Or just send the amp and a credit card number my way and I'll take care of it Just kidding .

 

Perhaps you
and the other guy are the only two.

It is also possible the "Kit" never worked right
to begin with and you are a casulty.

If I were a betting man, you will never find instructions
and a proper layout.

However, I definitely would take tonezone up on his
offer. Lot's of help is here, everyone can do their
part. AND your buddy that has one also can come
and do his at the same time.

RESULT

Two guys end up having kit amps that work.

Good luck what ever you decide.