Kenwood KA4002 problem

dicksolder · 19th March 2010, 04:56 PM

I've got a 30 odd year old Kenwoon KA4002 amplifier with the following problem: the left signal goes dead most of the time presumably due to a hot connection because if you give the amp a slight knock it works fine. The problem gradually became worse over time and now the left signal is dead most of the time.

Any ideas on where to start looking for the problem? Where can I find circuit diagrams for this amp to start debugging?

GuusD · 14th February 2012, 08:08 PM

Hi,

My KA4002 which I bought in 1976, has exactly the same problem in the left channel.
Have you managed to repair yours and do you want to share the solution with me ?
Thanks.

smartx21 · 10:27 PM

You both should read carefully this thread:
vintage amplifier repair/upgrade manual
Regards,
Max.

19th March 2010, 04:56 PM	#1
dicksolder diyAudio Member Join Date: Mar 2010	Kenwood KA4002 problem I've got a 30 odd year old Kenwoon KA4002 amplifier with the following problem: the left signal goes dead most of the time presumably due to a hot connection because if you give the amp a slight knock it works fine. The problem gradually became worse over time and now the left signal is dead most of the time. Any ideas on where to start looking for the problem? Where can I find circuit diagrams for this amp to start debugging?

15th February 2012, 10:19 PM	#3
smartx21 diyAudio Member Join Date: Mar 2010 Location: Santiago, RS/ Brasil	You both should read carefully this thread: vintage amplifier repair/upgrade manual Regards, Max. __________________ We should not dwell on what we do not have, but, instead, be grateful for what we do have! Last edited by smartx21; 15th February 2012 at 10:27 PM.

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Kenwood kac - x521 major problem	arazs5	Car Audio	17	18th March 2010 02:45 AM
Kenwood KDC-M9021SE laser unit problem	lostsoul_msh	Car Audio	0	2nd April 2009 06:31 PM
Problem with Kenwood CD drive	zcx2007	Digital Source	10	26th September 2008 07:47 AM
A problem with Kenwood KAC-846	bega_83	Car Audio	9	15th October 2007 12:19 PM
problem with older kenwood amp	shagone	Car Audio	11	6th July 2007 08:42 PM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	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

14th February 2012, 08:08 PM	#2
GuusD diyAudio Member Join Date: Feb 2012	Hi, My KA4002 which I bought in 1976, has exactly the same problem in the left channel. Have you managed to repair yours and do you want to share the solution with me ? Thanks.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)