A Fosi V3 No Counterfeits thread

[guy48065]

A claim was made this morning in another thread (locked for other reasons) that Fosi may be using counterfeit components. Their units are easy to disassemble and I happen to have one that I bought one year ago--So I decided to open mine up and take some pictures to settle the matter. Easily done.


"KY" caps with correct-looking fonts & symbols.


Wima caps


TI NE5532 op-amps


Elna caps appear legit.

These are REAL photos taken minutes ago.
Anyone see any problems here?
I think this also dispels any rumors of poor QC. The through-hole work, SMC soldering, PCB quality & wiring are as good as anything I've seen, and better than most.

 

[Dswankey]

 

[mrehorst]

The problem I see is that you can't tell if a part is counterfeit by photos alone. Different fonts or size/color of labeling on parts does not mean the part is counterfeit. All it means is that the company makes the parts on different machines, at different times, or in different factories, or maybe even pays other companies to make some of their parts for them. The only definitive way to tell real from counterfeit parts is to test and disassemble them, and finally to get an engineer from the company that makes the genuine parts to say that the other part is counterfeit.

I suspect a lot of the counterfeit parts claims are based on anti Chinese bias.

 

[GChief]

^^^ this.

One of my projects at my last company was random testing of components in the Gov stock system because of out of spec and counterfeit components. Pics tell little

 

[guy48065]

The pics in the other thread DO look fake. It's because the photo itself is a fake.
That's why I posted real photos.
I know it doesn't prove anything. I could be AI, too.
My profile sez I'm a "New Member"... That joined 19 years ago.
Ya can't trust anything, really.

 

[w3jn]

Already being discussed here by the OP:

Correction on my post about the Fosi amplifiers!

Post in thread 'Please Explain "Mini Amp" Phenomenon to Old School Member' https://audiokarma.org/forums/index.php?threads/please-explain-mini-amp-phenomenon-to-old-school-member.1076232/post-17547206 I will have to correct this. After checking some threads with pictures of the internals of two...

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