Cheap TPA3118D2 boards, modding them and everything that comes with it

[linuxfan]

Yes I know what the regulator is for. It's interesting that you consider it "not important". I've been hearing conflicting claims for the last 3 years. Here's what abraxalito said:

I've been listening a while and figure the next 'bottleneck' is most likely the switching reg powering the VDDA rail. Its a LM5010 set to 5V, I figure if I set it to say 7V with a resistor tweak I can put a linear reg between it and the TPA3220.

And JLesterP's SYLPH-D200 TPA3255 board uses a TPS7A49 for GVDD/VDD, instead of the typical LM2940.
The disparity of opinions is stark.

 

[Sangram]

Any idea what these chips actually are? It's a 28-pin SSOP package, and can handle a 21V rail just fine. They sound terrible but I guess that's expected for a fake, remarked chip. These are sold on Amazon (India) for just under $5 each. Interestingly the listing shows the correct PCBs, but this what you get in the package.

I want to reduce gain and/or try PFFB to improve things, as someone who's using a remarked $2 chip will be using inductors below the bottom of the barrell. I soldered the headers and thus can't legitimately ask for a return, but I wasn't expecting fakes so I didn't pay much attention.

 

[weissi]

So you think anyone is bothering to fake a $1 chip that is outdated already? They are saving on everything else that makes this chip sound good...

Edit: nevermind, I didn't count the pins. Strange, indeed...

 

[b_force]

Any idea what these chips actually are? It's a 28-pin SSOP package, and can handle a 21V rail just fine. They sound terrible but I guess that's expected for a fake, remarked chip. These are sold on Amazon (India) for just under $5 each. Interestingly the listing shows the correct PCBs, but this what you get in the package.

I want to reduce gain and/or try PFFB to improve things, as someone who's using a remarked $2 chip will be using inductors below the bottom of the barrell. I soldered the headers and thus can't legitimately ask for a return, but I wasn't expecting fakes so I didn't pay much attention.

Those are TPA3110 chips (or some Asian equivalent).

I had the same issues. Check couple of page back in this topic.

There is a little error in the board, just connect pin 5 and 6 to ground and your board will be nice and quiet!
(ground should be on pin 3 and 4 if I am not mistaken, but pls double check)

 

[Sangram]

Thanks guys. b_force, that was very helpful. I'll give that a shot.

 

[availlyrics]

use 8 ohm speakers, on 4 ohms some sort off protection circuit or output choke limitation causes audio at high volume to cut out. I got those from aliexpress in 2019

 

[Cloudberri]

Can anyone recommend a seller of genuine TPA3118 boards? I've got 6 from two different sellers (one ebay, one aliexpress); all fake, as per b_force's description a few posts back . The ebay seller has previously sold me genuine ones too.

 

[b_force]

Genuine boards from Ebay or Ali???

 

[jean-paul]

 

[Kjeldsen]

I hope these a genuine, at least you will get support

Search - Audiophonics

 

[Cloudberri]

Mange tak.

 

[AllenB]

Mange tak.

Translation - Thank you.

 

[david83]

Hi all. I hope you are keeping safe and well and enjoying the run up to the holidays

I started reading through this thread but it’s reasonably substantial I’ll apologise to start, because I expect this has been asked and answered at various points in the thread but

I have a Sinilink SY-X100H:



And XH-M567 (actual TPA chip, not the knock off thinner chip):



Which have the expected pop noise on power on/off.

What is the current widely accepted fix for this? I’ve looked through a lot of different suggestions and this one by @DUG:



Seems to be the only one that says it cures the pop when powering off. Is this the go to?

 

[kjb]

Hi! Today, for the first time, I tried my tpa3118 SANWU boards that I bought some years ago from ebay for perhaps $3 each. They seems both to be completely dead. Upon power up they pulls down the input voltage from 12V -> 2-3V. I measured the power input in it was not shorted, so perhaps there are some short/problem after the diode.

There is no sound at all from the output. No power on thump, hiss or anything. I also tried a 24V led driver that goes into protection directly on power on.

Anyone had this issue?

 

[xrk971]

Sounds like a dead short (solder bridge or the protection diode is on backwards) on the power input pins. Never had a TPA3116 do this.

 

[Turbowatch2]

Do you supply voltage from a rectified power supply or directly from an AC transformer?

 

[kjb]

The psu:s are both DC. The diode must be correct way otherwise it should not let through any current at all. So I guess something after the diode is shorted, but I cant see anything suspicious.

 

[availlyrics]

I bought about 10pcs from different Aliexpress vendors for 1.25$ each, all worked perfectly. Post your 3118 photos. Maybe they are fakes

 

[JC Fardo]

Hi everyone

Is there a neat way to mount a female jack socket on the aluminium case? I´m useing a generic Acer 19V 5.5 x 1.7mm male socke pc charger .

I found these on Aliexpress. No one seems to be 5.5mm x 1.7mm female pin.

https://www.aliexpress.com/item/1005003324016159.html?spm=a2g0o.productlist.0.0.44ba3012bTNdg2&algo_pvid=e95ac694-8e0f-4b84-8ca4-c8df04ba2236&aem_p4p_detail=202208180920584660563454897790020157995&algo_exp_id=e95ac694-8e0f-4b84-8ca4-c8df04ba2236-2&pdp_ext_f={"sku_id":"12000025352507410"}&pdp_npi=2@dis!BRL!14.92!9.71!!!29.24!!@2101e9d116608396584651962e8d31!12000025352507410!sea&curPageLogUid=q2uEANGbTUkI&ad_pvid=202208180920584660563454897790020157995_3

TIA

 

[kjb]

I bought about 10pcs from different Aliexpress vendors for 1.25$ each, all worked perfectly. Post your 3118 photos. Maybe they are fakes

Perhaps, this is how they look like.