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TPA3250 somebody is listening?
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Old Today, 12:49 PM   #341
chermann is offline chermann  Austria
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Join Date: Jan 2017
Location: Vienna
Quote:
Originally Posted by abraxalito View Post
Hi chris - sorry, I can't quite get your question here. That's a place where I talked about my mods to my TPA3255 board yes. I figured what worked for 3255 would likely also work for 3250.
itīs ok thanks...i just sort my self to plan the next step for modding the FX502s. so i go through the LM317 topic and i found your advice.


chris
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Old Today, 01:18 PM   #342
irribeo is offline irribeo  Netherlands
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Join Date: Apr 2013
There is a very unexciting online shop for TI parts, called the TIstore. Every other week they offer free shipping and other discounts and most Ebay sellers have higher sellingprices, because everybody knows cheap offers are fake
TIstore is boring.
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Old Today, 01:38 PM   #343
chermann is offline chermann  Austria
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Join Date: Jan 2017
Location: Vienna
Quote:
Originally Posted by irribeo View Post
There is a very unexciting online shop for TI parts, called the TIstore. Every other week they offer free shipping and other discounts and most Ebay sellers have higher sellingprices, because everybody knows cheap offers are fake
TIstore is boring.

yes....the LM317 looks not original
Attached Images
File Type: jpg FX502pro_inside_LM317 and coils.jpg (264.1 KB, 38 views)
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Old Today, 02:03 PM   #344
irribeo is offline irribeo  Netherlands
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Join Date: Apr 2013
TI store (free shipping at the moment, no discount code entered)
Order Summary
Edit >
LME49720NA/NOPB (2)
$5.36
Subtotal:
$5.36
Shipping & Handling:
$0.00
Total (USD):
$5.36

Ebay link from few posts back:
GENUINE LME49720NA Texas Instruments Dual OpAmp Audiophile; TI LME49720 DIP-8
Condition:
New
Item price:
$3.45
Quantity:
$6.90

Shipping cost
+ $6.25



Subtotal (2 items):
$6.90
Shipping to XXXX:
$6.25

Total:
$13.15


Problem is, TI doesn't tell you the LME is genuine, mmm, very difficult to make the boring choice
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Old Today, 02:34 PM   #345
cronm is offline cronm  Hong Kong
diyAudio Member
 
Join Date: Jan 2012
Hi Chermann

In your LM317 picture, it is printed "only sell in Japan" below the inductors.
My V3 blue board FX502S is no this label.
May be V5 for Japan only without any change on layout but I am not sure.
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Old Today, 04:38 PM   #346
swank42 is online now swank42
diyAudio Member
 
Join Date: Oct 2017
I ordered two LME49720NA from here
GENUINE LME49720NA Texas Instruments Dual OpAmp Audiophile; TI LME49720 DIP-8 | eBay

What are my chances for genuine vs. fake?
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Old Today, 05:13 PM   #347
denbret is offline denbret  Canada
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Join Date: Mar 2011
Location: St-Jean-Richelieu
Hi,

Did anyone compare the 3eaudio TPA3250 with the FXaudio ??
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Old Today, 06:35 PM   #348
noasds is offline noasds
diyAudio Member
 
Join Date: Dec 2017
Received today 502spro. First impression: sound really very good, definitely better than Breeze audio double tpa3116.
But after install LME49720NA sound became even much better, amazing!

One thing - it very hot even at low sound volume. Very small heatsink. I guess it's need make holes and install bigger heatsink.
Two big capacitors too closely with heatsink and also hot. So replace of heatsink required, or there will be a big boom one day.

rev.3
lm317.jpg

Last edited by noasds; Today at 07:01 PM.
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Old Today, 07:16 PM   #349
petersv is offline petersv
diyAudio Member
 
Join Date: Jan 2018
Quote:
Originally Posted by irribeo View Post
TI store (free shipping at the moment, no discount code entered)
Order Summary
Edit >
LME49720NA/NOPB (2)
$5.36
Subtotal:
$5.36
Shipping & Handling:
$0.00
Total (USD):
$5.36

Ebay link from few posts back:
GENUINE LME49720NA Texas Instruments Dual OpAmp Audiophile; TI LME49720 DIP-8
Condition:
New
Item price:
$3.45
Quantity:
$6.90

Shipping cost
+ $6.25



Subtotal (2 items):
$6.90
Shipping to XXXX:
$6.25

Total:
$13.15


Problem is, TI doesn't tell you the LME is genuine, mmm, very difficult to make the boring choice
Do you have a link to the opamp at shop.ti.com? I can't find it searching for LME49720NA?
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