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Old 06-11-2019, 01:38 PM   #221
bharley
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Default Re: Vox mini 3 amp

Thanks so much - that's about what I had figured on doing. As it turns out, instead of spending $ on another vox and time tearing it apart, I found an out-of-production unit by Line6 (Pocket Pod express) on eBay that looks like it has about the same functionality in an even smaller footprint. There are a few others as well, some much more compact DigiTech units that probably sound better and have way more programming options, but for $40 and no extra time fiddling I had to try the older Line 6. But I'll definitely keep you in mind if my Vox power circuit blows
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Old 06-21-2019, 12:28 PM   #222
bharley
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Default Re: Vox mini 3 amp

As it turns out the line 6 was crap, so I sent it back and went with the original plan. I could have soldered a wire to a volume pot from the headphone jack, but wanted to keep everything so it could be put back easily, so I just bought an external volume pot and it works fine. Bought a bypass foot switch so I can calibrate it to dry sound (and switch back and forth) and I'm very happy! The vox Mini3 makes a fantastic tabletop amp model/effects box. I did put a 1/4" jack on the speaker wires, and soldered a wire with 1 1/4" plug into the now amp-less combo cabinet, so I can also use it stand alone as a tiny stack. I'll post a pic some time.
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Old 06-22-2019, 01:25 AM   #223
midibob
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Default Re: Vox mini 3 amp

One thing to be aware of, if you're not already, is be careful about what you connect to the speaker output. Both speaker wires are above ground potential and if you plug the speaker output into anything with a ground on one side you'll pop the O/P stage!
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Old 10-13-2019, 02:14 PM   #224
Valley Luthier
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Default Re: Vox mini 3 amp

Hello Midibob. I hope you're not getting tired of requests for your Vox Mini3 daughterboards. I'd like to get one if you have any available. I've got an amp with the all too familiar symptoms... no output from the speaker but the headphone jack passes signal. Thank you!
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Old 10-14-2019, 02:52 AM   #225
midibob
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Default Re: Vox mini 3 amp

PM sent.
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Old 10-29-2019, 08:21 AM   #226
arnoldlai
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Default Re: Vox mini 3 amp

minibob, I'm in the Taiwan and looking at the cost of shipping/purchase of one of your daughter boards for the mini3. I have the equipment to do SMD。

Thanks in advance,
-ArnoldLai
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Old 10-30-2019, 08:08 AM   #227
midibob
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Default Re: Vox mini 3 amp

Hi Arnold,
Unfortunately I've just recently sold the last one. I've not got any plans of making more unless there is at least 5 requests. Keep an eye on this page for any updates.
I'll send you a PM.

Cheers
Bob
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Old 10-30-2019, 08:20 AM   #228
arnoldlai
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Default Re: Vox mini 3 amp

Quote:
Originally Posted by midibob View Post
Hi Arnold,
Unfortunately I've just recently sold the last one. I've not got any plans of making more unless there is at least 5 requests. Keep an eye on this page for any updates.
I'll send you a PM.

Cheers
Bob
HI Bob
got it,Thanks for you quickly reply, I'll Try to order IC from TI store

Last edited by arnoldlai; 10-30-2019 at 08:22 AM..
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Old 01-12-2020, 08:29 PM   #229
bdhact1
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Default Re: Vox mini 3 amp

Hi Midibob, I need to order one of your daughterbaords. Are they still available?
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Old 01-13-2020, 04:04 AM   #230
midibob
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Default Re: Vox mini 3 amp

Hi, unfortunately I don't have any more made at present. If I get more requests I will do another batch but demand has tailed off over the last year or so.

I'll send you a PM.
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Old 03-09-2020, 01:29 AM   #231
Ellenesr
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Default Re: Vox mini 3 amp

Hello can you email details of daughter board aquisition pls (t+c incl)sounds promising!
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Old 03-09-2020, 02:20 AM   #232
midibob
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Default Re: Vox mini 3 amp

Message sent.
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Old 05-02-2020, 04:14 PM   #233
moroccotopo
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Default Re: Vox mini 3 amp

Hi midibob,
I am located in Argentina and came across your post looking for info on how to repair my mini3 which has the exact same problem. I am interested in your daughterboard schematics. Any chance you could help me with that?

Thanks!
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Old 05-03-2020, 11:36 AM   #234
midibob
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Default Re: Vox mini 3 amp

I doubt very much I'll be making any more of these so I'm going to publish the installation instructions for anyone who wants to make their own. There is no schematic as such as it's so simple. It is based on the SSM2305 and the schematic is in the application notes.

If you do make your own, post a pic here for others to see.

Stay well
Bob
Attached Files
File Type: pdf Vox install3.pdf (1.04 MB, 28 views)
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Old 05-03-2020, 03:09 PM   #235
moroccotopo
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Default Re: Vox mini 3 amp

I really appreciate you opening this up for us.

Thank you very much!
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Old 05-04-2020, 04:14 PM   #236
moroccotopo
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Default Re: Vox mini 3 amp

Hi there!

I went ahead and tried to create the schematics for the daughter board circuit...

IMG_20200504_190514761_2.jpg

I am still learning electronics and it was not as simple/easy to me

Does this look accurate to you? Does pin 6 (VDD) connect to 1002 resistor and 10uF capacitor in series?

Thanks!
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Old 05-05-2020, 08:17 AM   #237
midibob
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Default Re: Vox mini 3 amp

How's this?
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File Type: bmp Vox mini 3.bmp (18.6 KB, 33 views)
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Old 05-05-2020, 08:51 AM   #238
moroccotopo
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Default Re: Vox mini 3 amp

Ah...that totally makes sense. I thought shutdown was unused...

Thank you!
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