Sanyo JCX2900KR - very special Main Switch - Solution without Switch wanted - diyAudio
Go Back   Home > Forums > Amplifiers > Solid State

Solid State Talk all about solid state amplification.

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 14th February 2012, 07:05 PM   #1
diyAudio Member
 
tiefbassuebertr's Avatar
 
Join Date: Jul 2005
Location: D-55629 Schwarzerden
Default Sanyo JCX2900KR - very special Main Switch - Solution without Switch wanted

This receiver is showed about
Sanyo JCX2900KR | eBay
Service Manual is available about
Download the Sanyo JCX-2900-KR service manual for free - Hifi Manuals
Schematic is on the last page

The replacement for this push button switch from Sanyo, part No 141-4-231T-76472 (4231T76472) is the c&k "NE1839EE" - see pdf attachment and the German homepage of mouser
NE1839EE C&K Components Pushbutton Switches


Actually this is a combination of two switches.
1) the main switch
2) the slave switch (change-over switch resp. toggle switch - I don't know the right term for such switches both in English and German)

The purpose of this additional switch is the avoid of unwanted popping while switch off, because this additional switch shorted a capacitor in the DC protect assembly (transient noise protection while power off).

After remove this switch I do switch on and off by an external main rocker switch (power strip resp. mains distributor with "build in" solution).
In general also a switchable Hama Socket Adapter (00047726) is suited.
Very important is now, to switch off at first the speaker selector switch and then - as second step - switch off the external main switch.
If I forget this sequence and do switch off the external main switch at first, I observe a very hard and aggressively (sharp) popping in the speaker.

The DC protector "TA7317" about
TA7317P Datasheet pdf - PROTECTION CIRCUIT FOR OCL POWER AMPLIFIER AND SPEAKER - TOSHIBA
serves a transient noise protection while switch off. Thus the most obvious solution is the introduce such a unit.

But is there an other more easy and effortless solution?
To avoid in any case is, that a new built-in switch of this kind should continue to be used.
Attached Files
File Type: pdf C&K NE1839EE.pushbutton.pdf (77.2 KB, 13 views)
  Reply With Quote
Old 15th February 2012, 04:38 AM   #2
diyAudio Member
 
Join Date: Jul 2003
Location: Dona paula, Goa
U have to use a rotary switch so that the sequence is always followed.

Gajanan Phadte
  Reply With Quote

Reply


Hide 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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Main On/Off Power Switch for various NAD Amp Models tiefbassuebertr Solid State 5 1st May 2014 06:05 PM
Main on/off switch for amp using a piezo switch using_e Solid State 13 20th June 2006 06:55 PM
Main switch-on delay tonistefanovski Pass Labs 1 21st October 2005 08:52 PM
Looking for a special switch kasra Parts 4 28th January 2005 02:46 AM
Using a momentary switch for main power switch? FullThrottleRic Parts 9 25th June 2002 09:23 PM


New To Site? Need Help?

All times are GMT. The time now is 12:02 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2