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Old 13th April 2013, 07:48 PM   #211
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What I would LIKE to find is a bare PCB and populate it myself. My searches have come up with nothing.
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Old 16th April 2013, 03:46 PM   #212
danzz is offline danzz  Spain
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Quote:
Originally Posted by THUMP LUMP View Post
What I would LIKE to find is a bare PCB and populate it myself. My searches have come up with nothing.
Here are a couple...

TA2020 PCB

YJ TA2020 PCB
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Old 17th April 2013, 12:10 AM   #213
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Thanks for the links but, given that the shipping from BFE is more than double than what the PCB costs, I would be better off etching my own for that price.

Ummmmm........Perhaps there is something there.
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Old 22nd April 2013, 09:06 AM   #214
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Quote:
Originally Posted by Fukinagashi View Post
Is there a suggested value for a 6 ohm speaker?
use 33
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Old 22nd April 2013, 10:27 PM   #215
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Default Not quite the same

Quote:
Originally Posted by Bare View Post
Take the oem Teeny inductors Off the board , unwind the hair thin windings, then rewind with the same number of turns (16) of heavier gauge Magnet wire. Instant upgraded Inductor coils, for a half hour's work and 1$ of wire.
Bare, I tried this and it takes a few more turns with thicker wire. The original wire on mine was appox 0.38mm thick and all measured right at 9.5 uH. I replaced with 0.65mm wire from a transformer. I played with it till I found a 12.5" length would give the desired 10uH. I think it was 22 turns? Best to use a meter.

I left two of the coils untouched on one side and modified two on the other. I wanted a side by side comparison. It may be a little while till I get to test as I've removed everything I want to change and I'm modding a nice little cigar box for it to go into.
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Old 23rd April 2013, 02:37 AM   #216
Bare is online now Bare  Canada
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That IS strange. Done more than a few over the years.
In truth tho.. usually a bit bigger / more involved than the Wee Lepai ones.
Although Given that it's a simple Hash filter circuit on these.
This really Will Not have audible effect .
Only the Series resistance bottleneck was the issue.

Sadly I've pretty well come to the end of my Patience with these Lepai boxes.
Another one ...just died... today!
First one I fried by tripping over the speaker wires .. Doh!
Second Lepai lost one channel all by itself... while operating.
Today the Third! one also shed a channel. Exactly as the 2nd one.
For No explicable reason.
Everything checks out.. except the Chip.
My Guess is that the Fake Ta 2020 chips fail after prolonged use.
(6 months??)
Possibly dependent on just how shitty that particular Fake production run was.
I have 3 remaining GENUINE Ta 2020 Chips..I won't be wasting/inserting any into these goof ball Lepai PCBs though.
One day (?) I'll build up a Tripath Circuit..
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Old 23rd April 2013, 03:57 AM   #217
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I've had my Lepai for 2 years or so and haven't had any problem. Sometimes playing and/or idling for days on end. It's in a smallish room, though, and has rarely been asked to put out more than about 5wpc@4Ω, since its first day out of the box.
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Old 24th April 2013, 06:13 PM   #218
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Well, I ordered one from PE. As well as a few other things to go with it. 4700uf cap for the power side and a pair of 2.2uf Audyn foil caps for the input side. I plan on bypassing the tone controls and wiping the board of both opamps. There should be enough room for both 2.2uf caps where the opamps use to be.

Originally, I was going to place it in a new case but decided that this little amp isn't worth all that. So, I am just going to bead blast the main case and re-paint and replace the end pieces with something else, just haven't decided on what yet. I am also loosing the spring speaker terminals for binding posts.

I should have the goods in by the end of the week and will follow up with a Mouser order to replace the inductors and caps on the output side.

Should be posting pics after the weekend.
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Old 25th April 2013, 03:30 AM   #219
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Default teaser

looking good
Attached Images
File Type: jpg Cigar.JPG (58.1 KB, 238 views)
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Old 27th April 2013, 06:12 PM   #220
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Well, I got the goods in today. But I won't be modding this one. Arrived DOA from PE. Really a let down. Been waiting and researching these things for a couple weeks only for it to get here and not work from the start. It lights up but no sound. Time to contact PE for a replacement.
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