Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Chip Amps Amplifiers based on integrated circuits

Stk chip
Stk chip
Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 23rd February 2016, 10:35 PM   #1
nikolas00 is offline nikolas00  Greece
diyAudio Member
 
Join Date: Feb 2016
Default Stk chip

It is about a Sony amp unit of mini hifi from 90s the chip was blown away for 2nd time in 7years that someone else change it for me I purchase a new one i almost blown the pcb with the heat gun and I maybe blow the new one but all this was suggestions because the problem with the whole thing was still the same as before I change the chip I open the thing and the rear fan was run in hi rpm and then I close it :P note that I haven't have any technician skills except from the basics any suggestions?

Thx for your time
  Reply With Quote
Old 24th February 2016, 01:13 AM   #2
adason is offline adason  United States
diyAudio Member
 
adason's Avatar
 
Join Date: Nov 2004
Location: Maryland
time to make a new amp...
  Reply With Quote
Old 24th February 2016, 02:50 AM   #3
gmphadte is offline gmphadte  India
diyAudio Member
 
Join Date: Jul 2003
Location: Dona paula, Goa
If you want to learn, open it and post photos. Most of the solder in your Sony has cracked, but needs some skills to perform the maintenance. You could as well buy an assembled amp board and make an amp.

Gajanan Phadte
  Reply With Quote
Old 24th February 2016, 09:19 PM   #4
nikolas00 is offline nikolas00  Greece
diyAudio Member
 
Join Date: Feb 2016
Here are some pics
  Reply With Quote
Old 24th February 2016, 11:13 PM   #5
nikolas00 is offline nikolas00  Greece
diyAudio Member
 
Join Date: Feb 2016
So is there any possibility to fix it because I cannot believe how good is it made until I open it you find in there companies as Elna nichikon alps for potensiometer etc.The only problem with this thing is the cheap stk amp in there because otherwise I want it in my office as of spk so with my limited knowledge in the whole thing yes I want to learn in it as I fix it and I was wondering and I don't know if this is correct can I convert the amp from stk (in power unit) to transistor witch I thing is more stable than a the cheap stk chip? The specs if I remember it is 35+35w @ 8ohm so is it possible for me to build something like this on those pcb's that you cut it as you like?

Thanks for your time and be kind with my noobish :P
  Reply With Quote
Old 25th February 2016, 07:53 AM   #6
AndrewT is offline AndrewT  Scotland
R.I.P.
 
Join Date: Jul 2004
Location: Scottish Borders
You could build up a small chipamp based on another manufacturer's chip.
When you get that working on the test bench, you can decide whether it can be made small enough to replace the STK in the space you have available.
Or
just build a new amplifier chassis for your two new channels of amplification.
__________________
regards Andrew T.
  Reply With Quote
Old 25th February 2016, 08:01 AM   #7
gmphadte is offline gmphadte  India
diyAudio Member
 
Join Date: Jul 2003
Location: Dona paula, Goa
Check whether any solder pads are cracked, and solder these points, on the STK board.

Do you have a DMM and a crystal receiver.

Gajanan Phadte
Attached Images
File Type: jpg cracked solder.JPG (21.4 KB, 35 views)
  Reply With Quote
Old 25th February 2016, 08:21 AM   #8
Mooly is offline Mooly  United Kingdom
diyAudio Moderator
 
Mooly's Avatar
 
Join Date: Sep 2007
Stk chip
Used to work on a lot of this kind of gear. I'd just fit a new STK and be done with it. Buy from a reputable source.

If you have no 'technician skills' then making and connecting up a chip amp to the correct points in the Sony seems a bit ambitious tbh. Fixing this one might have a more successful outcome.

STK4162-IISemiconductor General I/C (18-PIN)
  Reply With Quote

Reply


Stk chipHide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
PCB with Chip Amplifier STK 4142II dadolarano Chip Amps 2 9th April 2013 05:06 PM
stk chip stability issues diy didi Solid State 0 10th April 2012 02:19 PM
stk chip amp component values jimmy audio Chip Amps 1 6th August 2010 09:53 AM
Help needed with old Sanyo STK chip amp please georgehifi Chip Amps 3 3rd September 2004 09:14 AM
Bridging stk 4192 II chip rs1026 Chip Amps 0 30th August 2004 01:41 PM


New To Site? Need Help?

All times are GMT. The time now is 03:56 PM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 14.29%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Copyright ©1999-2019 diyAudio
Wiki