broken trace means the circuit line on PCB (green color board) putus

beggarmaster2000, got any idea to mod a CS21?
very good sound but i want more

ENEMY SPOTTED!

reflow the dry soldah there!!!
the output from your 7370b is loooooooooooose
while you are at it, reflow the rest circled too for insurance =)
it looks similar to 4100 inside but unfortunately i am not much of a help =(
this place has a better idea for you http://duskblue616.pixnet.net/blog/post/14507867
looks like you'll need a major recap for the all the caps inside is lausy make in taiwan/china
as usual my idea of mod always starts at recapping the signal path first, powerfilter 2nd last and opamps last
cables and interconnects optional =) unless faulty

also, if you manage to get your hands on 50v 2.2uf elna,nichicon audio grade caps, and around selangor area i wanna bulk with yoo =)
because when i change the value, the sounds kelong

This post has been edited by beggarmaster2000: Aug 15 2010, 03:45 PM

Solution found and confirmed!!!!

Re-soldered the two suggested pins and some of the suspected dry solder and my subwoofer is WORKING again!!!!



No wonder last time when it did not work, I bump the woofer it a bit it works... the big metal piece is the heatsink to that 7370b chip right ???


Thanks a lot man!!!!

thanks to your awesome pictures i can see the rosak part =)

that is very informative, thx!!
so far i never touch the electronics inside
its time to get busy during semester break
target is... edifier midrange S530D

This post has been edited by ktek: Aug 15 2010, 10:04 PM

midrange ar? that's high end oredi

what do you mean high end?

sky high

done counting the caps, total are 39pcs
2.2uF 50V -10pcs
4.7uF 50V -9pcs

the rest are 1-2pcs small amount
nao i understand why u need bulk lol

anyway, i will be salvaging an oldskool JVC player for parts

330-530-730, 530 in the middle ma

=(

Altec Lansing Audio Management Software for XP/2000
http://rs334.rapidshare.com/files/122125990/ACS_495_Altec_Lansing_Speaker_Drivers.exe
Yes, it is digital controls via USB for Windows OSR2/98/2000/XP/Server 2003
compatible with ADA-305,ADA-310,ADA-355,ADA-600, may be more, I do not know

http://www.fixya.com/support/t156007-wirin..._lansing_avs500

This post has been edited by visualex: Aug 16 2010, 02:25 PM

thanks for your software, unfornately it did not help me solve my poroblem. both models i mentioned is not usb controlled

if u found any source too.. let me know

i got some from here and here
http://forum.lowyat.net/index.php?showtopic=1484676
http://forum.lowyat.net/index.php?showtopic=1484987

a more practical source would be preferred...
like a shop to purchase these parts...

nothing special, but even regular ones beat the stock ones flat

today, i went to get some =) found some =) buying oledi

this where i go buy

Oo... lotsa caps
why not build this?

i already have this...

sparks from that thing not powerful enough la
this one can kill two people wor

erm.. what about this one?

it killed my granddad, my uncle, a few more other relatives and friends and now its slowly killin me =)