Hi guys...
My girlfriend had an Panasonic SA-AK20 stereo system with cd changer... This unit died yestarday after 9 years of working. Cd changer went dead. So I have a problem - to make an amplifier out of it. Problem is not making an amplifier but that I don't know what is the chip inside it.
On chip it says:
BC
POWER MODULE
RSN 3502 A
020601
Does anyone knows where to find datasheet for that chip or some schematics. I have to use the same transformer from the stereo system and some of the parts but I don't like to take the schematic from the pcb board... Maybe it could be easier...
Thanks in advance
daniel
My girlfriend had an Panasonic SA-AK20 stereo system with cd changer... This unit died yestarday after 9 years of working. Cd changer went dead. So I have a problem - to make an amplifier out of it. Problem is not making an amplifier but that I don't know what is the chip inside it.
On chip it says:
BC
POWER MODULE
RSN 3502 A
020601
Does anyone knows where to find datasheet for that chip or some schematics. I have to use the same transformer from the stereo system and some of the parts but I don't like to take the schematic from the pcb board... Maybe it could be easier...
Thanks in advance
daniel
How about turning it into a gainclone, a la Nuuk Enterprises:
http://www.diyaudio.com/forums/showthread.php?s=&threadid=23608&highlight=
![Smile :) :)](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
http://www.diyaudio.com/forums/showthread.php?s=&threadid=23608&highlight=
Hi guys!
Ropie,
I can't build Gainclone because my tranfo from stereo system is not good (29,7V-0V-29,7V and 13,0V-0V-13,0V all in all aproximatelly 100VA-120Va transfo). The voltages and VA are not good for gainclone
- only if You ment with this chip- the chip is aprox 80$ brand new and I would not like to buy some chips instead I would like to rather use this chip because I simply have it and for LM1875 and LM3875 (as I have said) the voltage is not good
- but it would be in gainclone style if I could find some datasheets
Netlist,
thanks man- I will see what to do with it- I must turn on my brain cells and see what will come out (hopefully not something +'%&/$"3215%)![Wink ;) ;)](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
It is perfect for a start- thanks again.
I hope I'm free to ask You something if I would have any questions?
best regards
daniel
Ropie,
I can't build Gainclone because my tranfo from stereo system is not good (29,7V-0V-29,7V and 13,0V-0V-13,0V all in all aproximatelly 100VA-120Va transfo). The voltages and VA are not good for gainclone
Netlist,
thanks man- I will see what to do with it- I must turn on my brain cells and see what will come out (hopefully not something +'%&/$"3215%)
It is perfect for a start- thanks again.
I hope I'm free to ask You something if I would have any questions?
![cannotbe :cannotbe: :cannotbe:](https://files.diyaudio.com/forums/images/smilies/cannotbe.gif)
best regards
daniel
Yes , on the other thread in forum (part with components) I asked also this question an mention that this chip is practically the same as one Zou have mentioned- but I forgot to post it here- so somebody might have shematic that You posted- THAKNS A LOT - my girlfriend will be very happy (hopefully- I will post something in here when it is finished
)
thanks
![bigeyes :bigeyes: :bigeyes:](https://files.diyaudio.com/forums/images/smilies/bigeyes.gif)
![clown :clown: :clown:](https://files.diyaudio.com/forums/images/smilies/clown.gif)
![smash :smash: :smash:](https://files.diyaudio.com/forums/images/smilies/smash.gif)
thanks
Yes, make some nice amp with it!!sparkle said:my girlfriend will be very happy (hopefully- I will post something in here when it
/Hugo - would do anything to make girlfriends happy
O.K.
Hi!
I didnt do it.....
He said....
Well if I get this right the schematic might look like down below for it. Please correct me if I am wrong (especially the red marks).... Thanks...
Also say what could be done like in Gainclone style if it would be possible because this amp looks like it could...
Also I have found some differences on the original board of the sound system so that would be the second schematic.
I have a question.... My friend heard about my amplifier problems ( I was asking him if he knows where to find datasheets etc.) and he gave me for a couple of cap's a pcb from an old Revox amplifier with an toroid transfo. The pcb contains 2 chips TDA1514A. What should I do. Which amplifier is better?
TDA1514A is mono 50W amplifier but it is very cheap (6$ or so) and RSN is not so cheap (70$ or so). Which one would sound better that is the question
now.
Ofcourse there are some sentimental reasons to use RSN chip because my girlfriend says:" What have You done to my stereo
she didn't saw what I did to mine....
![Smile :) :)](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
Hi!
I didnt do it.....
Well if I get this right the schematic might look like down below for it. Please correct me if I am wrong (especially the red marks).... Thanks...
Also say what could be done like in Gainclone style if it would be possible because this amp looks like it could...
Also I have found some differences on the original board of the sound system so that would be the second schematic.
I have a question.... My friend heard about my amplifier problems ( I was asking him if he knows where to find datasheets etc.) and he gave me for a couple of cap's a pcb from an old Revox amplifier with an toroid transfo. The pcb contains 2 chips TDA1514A. What should I do. Which amplifier is better?
TDA1514A is mono 50W amplifier but it is very cheap (6$ or so) and RSN is not so cheap (70$ or so). Which one would sound better that is the question
Ofcourse there are some sentimental reasons to use RSN chip because my girlfriend says:" What have You done to my stereo
Attachments
Re: DIDN'T DO ANYTHING
What a nice picture
I never saw a big chip open like this. Quite impressive.
You might take care, something tells me strange chemicals could be exposed now.![Eek! :eek: :eek:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
I could try and dig a bit deeper to find more info on that chip but looking at the present state I got the feeling it became quite useless.
Here's one advice: Find the beautiful Gainclone threads, print the nicest pictures (on high glossy paper of course), sit down, relax and show them to your girlfriend, let her choose a model and promise her to build one.![Wink ;) ;)](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
Warning: You could have a hard time with Peter’s art.
I know very little about Gainclones, but who says those trafo's are no good? LM3875: Supply: 20-84V. Looks like any trafo could be used.
/Hugo![Smile :) :)](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
10 X LOLsparkle said:It just fell off
What a nice picture
I never saw a big chip open like this. Quite impressive.
You might take care, something tells me strange chemicals could be exposed now.
I could try and dig a bit deeper to find more info on that chip but looking at the present state I got the feeling it became quite useless.
Here's one advice: Find the beautiful Gainclone threads, print the nicest pictures (on high glossy paper of course), sit down, relax and show them to your girlfriend, let her choose a model and promise her to build one.
Warning: You could have a hard time with Peter’s art.
I know very little about Gainclones, but who says those trafo's are no good? LM3875: Supply: 20-84V. Looks like any trafo could be used.
/Hugo
What about TDA1514A chip. I have 2 of them in an old revox and I could dig them out.....
Yes yes- the LM3875 or LM1875 was my second choice- well maybe the LM1875 was my second choice...![Smile :) :)](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
The RSNxxxxx chip was working until the stereo went dead (I meen CD changer went dead).... I think I would give it a try and connect it in the air and see what happens.... I will let You know....
IF You wish I could send You some more pictures I have in greater resolution from that chip........![Smile :) :)](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
p.s. picture is from revox board
edit: I found some informations about TDA1514A - don't bother
)
Yes yes- the LM3875 or LM1875 was my second choice- well maybe the LM1875 was my second choice...
The RSNxxxxx chip was working until the stereo went dead (I meen CD changer went dead).... I think I would give it a try and connect it in the air and see what happens.... I will let You know....
IF You wish I could send You some more pictures I have in greater resolution from that chip........
p.s. picture is from revox board
edit: I found some informations about TDA1514A - don't bother
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