Is this a real TDA1541A? - Page 37 - diyAudio
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Old 9th January 2012, 10:44 AM   #361
poynton is offline poynton  United Kingdom
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Fusible resistors blown
Regulators overheating


.
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Old 9th January 2012, 12:29 PM   #362
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Quote:
Originally Posted by studiostevus View Post
Ok... So what's the worst that can happen if I just plug this chip in my board?
white smoke with black streaks criss-crossed and a slightly unpleasant odor.


previously measured the resistance of the pins

http://www.diyaudio.com/forums/digit...ml#post2645542
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Old 9th January 2012, 06:34 PM   #363
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Only way to find out it to try...

So I measured the pins... All open circuits... And tried.

No smoke, no explosions, no sound. In other words, a fake, but not damaging the pcb....

Dont buy it!
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Old 28th January 2012, 06:52 AM   #364
regal is offline regal  United States
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I am thinking a may have an authentic 97 A. As I understand these were fabbed in china and stamped in europe. This one has a german code HBH9751 2 and on the underside the circle indent is molded CHINA which I believe is an indication that it may be a real '97.

The only odd thing is a also recieved a HSH9414 and it has the same lot number 11226 as the 97, it doesn't have the CHina in the underside mold.

No continuity between any pins. The surface is from the mold, not sanded down.

Think the '97 is authentic?

Click the image to open in full size.

Click the image to open in full size.
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Old 28th January 2012, 08:54 AM   #365
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here is a picture of a TDA1541A I belive it to be genuine since i got it through nedis a couple of years back, I belive nedis was an official source for philips spare parts at the time.
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Old 28th January 2012, 09:55 AM   #366
regal is offline regal  United States
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Tazz, does yours have the china mold mark in on of the underside circles? (that I tried to take a picture of above) I can't see anything in that circle on your photo, can you confirm?

thanks
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Old 28th January 2012, 10:08 AM   #367
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Quote:
Originally Posted by regal View Post
Tazz, does yours have the china mold mark in on of the underside circles? (that I tried to take a picture of above) I can't see anything in that circle on your photo, can you confirm?

thanks
No it does not.
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Old 31st January 2012, 05:10 PM   #368
AndrewE is offline AndrewE  United Kingdom
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Any thoughts on this?

The date code suggests October 2004 were they still made then?
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Old 31st January 2012, 05:15 PM   #369
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97/98 are the newest genuine ICs I have seen
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Old 31st January 2012, 05:21 PM   #370
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Quote:
Originally Posted by AndrewE View Post
Any thoughts on this?

The date code suggests October 2004 were they still made then?
Seems the print is yellowish?? If so, then fake

Look a couple pages back... 2004 MAY BE genuine production... May...
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