QUAD CLONE,OUTPUT 30v,NEED HELP.

SHARMAN · 24th June 2005, 06:37 AM

dear all
i have a problem in my clone QUAD606,the OUtput is about +25V when supply voltage is +-40V,from the schematic i think the point A is about 0V,
is anyone know how did the QUAD606 working(from the schematic) for output near 0V.and who can help me to slove the clone problem.thanks a lot.
i use the transformer like below

analog_sa · 24th June 2005, 07:10 AM

You probably have a wiring error. What are the voltages at the input and output of the servo?

Blue · 24th June 2005, 07:27 AM

The daiagram appears to be missing a vital part --- The PSU --- did you also correctly "clone" the PSU especially the active ground offset balance T15 and T16 ???

Blue (in from the windy city)

amplifierguru · 24th June 2005, 07:31 AM

You must halt production. Clone is missing DNA.

Greg

ele-tube · 24th June 2005, 08:04 AM

You could test others nodes voltage such as marked in the schematic.

SHARMAN · 24th June 2005, 12:46 PM

i did the correctly wring and use active ground powersupply,output is still in high DC leveL,I want to confirm is anyone who has the experience in QUAD equipment,How is the QUAD606 output can located in 0V.

405man · 24th June 2005, 05:06 PM

Did the amp ever work or has it always been faulty

Stuart

janneman · 24th June 2005, 06:19 PM

Quote:

Originally posted by SHARMAN
dear all
i have a problem in my clone QUAD606,the OUtput is about +25V when supply voltage is +-40V,from the schematic i think the point A is about 0V,
is anyone know how did the QUAD606 working(from the schematic) for output near 0V.and who can help me to slove the clone problem.thanks a lot.
i use the transformer like below

Which is the point that is at 25V? I see only two 0V points in your schematic.

Jan Diddden

SHARMAN · 25th June 2005, 12:53 AM

janneman,
The pointA normal is about 0V ,but my clone in pointA is about +25V,i have no idea.

janneman · 25th June 2005, 09:18 AM

Quote:

Originally posted by SHARMAN
janneman,
The pointA normal is about 0V ,but my clone in pointA is about +25V,i have no idea.

OK, I assume that the other '0V' point in the drawing is also at +25V?
The best way to trouble shoot this is working backwards from point A (leftwards) and measure the terminal voltages of the transistors as shown in the schematic. And don't assume that your wiring is correct. It is very difficult to spot wiring problems if you did it yourself. Unless a component is broken, it is a wiring error. There are no more flavors...

Keep us posted.

Jan Didden

24th June 2005, 07:27 AM	#3
Blue diyAudio Member Join Date: Nov 2004 Location: Grand Cayman	the whole picture The daiagram appears to be missing a vital part --- The PSU --- did you also correctly "clone" the PSU especially the active ground offset balance T15 and T16 ??? Blue (in from the windy city)

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
Kit building Quad 405 Clone	JonLawes	Solid State	133	10th February 2011 07:34 PM
Wtd: Quad 606 Clone	fusion	Swap Meet	0	28th December 2006 08:23 PM
Quad 405-2 clone	al2002	Solid State	19	15th May 2006 06:14 PM
Quad Clone	urant	Solid State	13	16th March 2005 07:18 AM

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

24th June 2005, 07:10 AM	#2
analog_sa diyAudio Member Join Date: Aug 2002 Location: Sofia	You probably have a wiring error. What are the voltages at the input and output of the servo?

24th June 2005, 07:31 AM	#4
amplifierguru Account Disabled Join Date: Aug 2004 Location: Earth	You must halt production. Clone is missing DNA. Greg

24th June 2005, 08:04 AM	#5
ele-tube diyAudio Member Join Date: Aug 2004 Location: Wuxi China	You could test others nodes voltage such as marked in the schematic.

24th June 2005, 12:46 PM	#6
SHARMAN diyAudio Member Join Date: Jun 2005 Location: SHANGHAI	i did the correctly wring and use active ground powersupply,output is still in high DC leveL,I want to confirm is anyone who has the experience in QUAD equipment,How is the QUAD606 output can located in 0V.

24th June 2005, 05:06 PM	#7
405man diyAudio Member Join Date: Dec 2003 Location: Near Glasgow Scotland	Did the amp ever work or has it always been faulty Stuart

25th June 2005, 12:53 AM	#9
SHARMAN diyAudio Member Join Date: Jun 2005 Location: SHANGHAI	janneman, The pointA normal is about 0V ,but my clone in pointA is about +25V,i have no idea.

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