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Old 24th October 2011, 06:28 PM   #311
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All silicon was done in nijmegen indeed. As far as i know, assembly/test was done first in nijmegen, later in kaohsiung, taiwan. The print on the chip hence relates only to where the assembly/test/qc was done.
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Old 11th November 2011, 01:21 AM   #312
vtspada is offline vtspada  Hong Kong
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Default same batch of S1 but different

Both pictures were taken from Marantz CD95.
Which one is fake?
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File Type: jpg 1541-cd95.jpg (293.8 KB, 392 views)
File Type: jpg wba_182200.jpg (49.6 KB, 375 views)
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Old 11th November 2011, 08:20 PM   #313
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None of the above


Edit: left picture looks a strange crown and s1 print. Still i would vote for real

Edit again: left is fake s1... It's a real tda, but not crown
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Old 11th November 2011, 09:15 PM   #314
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Both are originals to me, crown or not.
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Last edited by jean-paul; 11th November 2011 at 09:18 PM.
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Old 11th November 2011, 10:28 PM   #315
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Quote:
Originally Posted by ahiukka View Post
I bought 2 pieces of TDA1541A from eBay:

IC PHILIPS DIP-28 TDA1541A | eBay

At the photo, even though bad one, you can quite clearly see the right font used, but the ones I got are a different story...
I'm not going to risk my player and try them out, as they are obviously fakes of some sort.

Sent a complaint to the seller, waiting for response....
What is the outcome with this seller?
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Old 14th November 2011, 08:52 AM   #316
Witti is offline Witti  Thailand
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I took these pictures form my Marantz CD-95. Have a nice day. ^ ^



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Old 14th November 2011, 10:18 AM   #317
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Why don't you take out the pcb and look at the solder joints ?
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Old 14th November 2011, 12:06 PM   #318
Witti is offline Witti  Thailand
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Solder joints haven't been touched. ^ ^



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Old 14th November 2011, 01:06 PM   #319
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Originally Posted by Witti View Post
Solder joints haven't been touched. ^ ^



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Old 21st November 2011, 05:44 AM   #320
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Hello everybody,
I usually don't hang around on public forums, but this thread caught my attention and I thought I'll stir a pot a little bit.
I've been modifying Philips chipset based players from the early 90's, long before it was in everyone's mouth and long before the internet boom (well, there was Compuserve back then). :-)
Anyway, there have been a lot of speculation recently regarding unseen date codes, so I went and inspected what I have. Here are some pictures that might help some of you to identify what's what. All of my 1541 purchases were from Marantz service in Germany, except one batch of S2, which were bought from some Hi-End dealer in Hong Kong or Taiwan - I can't remember anymore.

First picture shows TDA1542S1 and SAA7220P/B from the last batch, remains of which is in the second picture. Note the HBH code! I think this should end the speculation about this particular code.
Check the original part number on the plastic bag that came from Marantz (third picture).
Fourth picture shows four 1541's that left from one batch that I bought from Marantz around ca' 1994-1995.
Fifth picture - original Philips "Selection Q" IC's from various Marantz 85/Philips 880 that were exchanged for S2 versions.
Sixt picture - S2 version from that Asian dealer mentioned above.
Seventh picture shows different S2 that was rescued from damaged Naim CD player. Previous owner glued heatsink to it, so when I removed it, parts of the print remained on heatsink. (You can rotate and mirror that image in Photoshop or similar to read the numbers).
Last picture is not that important - it only shows SAA7220's (also purchased in Germany), but, in case someone is worried about the fake ones, here it is, just FYI. Enjoy!
I hope I was able to help somehow.
Attached Images
File Type: jpg both_mar_last.jpg (154.4 KB, 199 views)
File Type: jpg vault.jpg (172.1 KB, 205 views)
File Type: jpg bag.jpg (76.5 KB, 176 views)
File Type: jpg 1541_mar_90.jpg (158.8 KB, 190 views)
File Type: jpg 1541_selq.jpg (138.0 KB, 197 views)
File Type: jpg 1541_s2_tw.jpg (76.6 KB, 186 views)
File Type: jpg 1541_s2_nm.jpg (96.5 KB, 192 views)
File Type: jpg 7220_tubes.jpg (135.3 KB, 197 views)
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