Onkyo M 508

beks · 20th May 2004, 08:30 AM

Hi,

I have Onkyo Integra M 508 power amplifier, and left channel is blown. Even if all transistors are changed, i.e. power out stage, drivers, small frequencies trans. etc., it will work just few minutes and everything will die again.
There are 8 big capacitors 10000uF/90V and seems they are fine, though.

My question is, does anyone has schema or similar documentation for onkyo, or any kind of help will be appreciated.

Thanks in advance

Jan Dupont · 20th May 2004, 12:20 PM

Normally the M 508 are known to blow the big caps, but I have never experienced a 508 that blows the output devices like this ...
I'm also interested in a copy of the schematic if possible

K-amps · 20th May 2004, 05:10 PM

Quote:

Originally posted by ACD

I'm also interested in a copy of the schematic if possible

Me too

Netlist · 20th May 2004, 05:30 PM

Quote:

Originally posted by beks

My question is, does anyone has schema

If its urgent, no, but I could try to have it if you could wait two weeks or so.

/Hugo

Jan Dupont · 20th May 2004, 05:42 PM

Please do....
I'm not in a hurry

K-amps · 20th May 2004, 05:58 PM

Same here!

beks · 21st May 2004, 07:04 AM

Thank You guys,

If somehow is possible to get that schema for this amp, will be like gift for Xmas.

Netlist: I'm not in the hurry, I can wait just in case you can find something..

thanx

Netlist · 28th May 2004, 10:59 AM

All,
The manual came in.
Mail me and expect it in your box tomorrow.

/Hugo

Tony · 29th May 2004, 12:23 AM

hi netlist,
can i have the schematics too? thanks...

how about an onkyo integra m510, i believe their top of the line way back then...thanks

you may send to rodenbarca@yahoo.com or jbuenotecson@yahoo.com

thanks a lot,

tony

lubbie · 29th May 2004, 01:03 AM

I have the M510 Integra on order and it was ONKYO's 1995 Flagship Amp.. Waiting for it to arrive.

This amp claimed 0.003 IM and .005 THD at rated output..

300watts/ch into 8ohm. 750watts/ch into 4ohm.
1Hz-100KHz +-.1db
120db SN

If anyone wants to look i'll try and post.

The M508 is no slouch though.. Look at the following specs.

The M508 claims 200W/ch into 8. 460W/ch into 4
Same frequency responce as above but has lower distortion .003 for both IM and THD at rated output.

20th May 2004, 08:30 AM	#1
beks diyAudio Member Join Date: May 2004 Location: Prishtina	Onkyo M 508 Hi, I have Onkyo Integra M 508 power amplifier, and left channel is blown. Even if all transistors are changed, i.e. power out stage, drivers, small frequencies trans. etc., it will work just few minutes and everything will die again. There are 8 big capacitors 10000uF/90V and seems they are fine, though. My question is, does anyone has schema or similar documentation for onkyo, or any kind of help will be appreciated. Thanks in advance

20th May 2004, 12:20 PM	#2
Jan Dupont diyAudio Member Join Date: Apr 2003 Location: Copenhagen, Denmark	Hmmmmmmmmm... Normally the M 508 are known to blow the big caps, but I have never experienced a 508 that blows the output devices like this ... I'm also interested in a copy of the schematic if possible __________________ Free Schematic and Service Manual downloads www.audio-circuit.dk, Company: www.dupont-audio.com, Joint venture: www.DupontMantra.com

20th May 2004, 05:42 PM	#5
Jan Dupont diyAudio Member Join Date: Apr 2003 Location: Copenhagen, Denmark	Netlist Please do.... I'm not in a hurry __________________ Free Schematic and Service Manual downloads www.audio-circuit.dk, Company: www.dupont-audio.com, Joint venture: www.DupontMantra.com

29th May 2004, 12:23 AM	#9
Tony diyAudio Member Join Date: May 2003 Location: Palatiw, Pasig City	hi netlist, can i have the schematics too? thanks... how about an onkyo integra m510, i believe their top of the line way back then...thanks you may send to rodenbarca@yahoo.com or jbuenotecson@yahoo.com thanks a lot, tony __________________ http://www.electronicslab.ph/forum/i...?topic=32688.0

29th May 2004, 01:03 AM	#10
lubbie diyAudio Member Join Date: Mar 2003 Location: Dawson Creek, British Columbia	I have the M510 Integra on order and it was ONKYO's 1995 Flagship Amp.. Waiting for it to arrive. This amp claimed 0.003 IM and .005 THD at rated output.. 300watts/ch into 8ohm. 750watts/ch into 4ohm. 1Hz-100KHz +-.1db 120db SN If anyone wants to look i'll try and post. The M508 is no slouch though.. Look at the following specs. The M508 claims 200W/ch into 8. 460W/ch into 4 Same frequency responce as above but has lower distortion .003 for both IM and THD at rated output. __________________ Ralph Electronics Tech.


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20th May 2004, 05:58 PM	#6
K-amps diyAudio Member Join Date: Nov 2003 Location: Indiana	Same here!

21st May 2004, 07:04 AM	#7
beks diyAudio Member Join Date: May 2004 Location: Prishtina	Thank You guys, If somehow is possible to get that schema for this amp, will be like gift for Xmas. Netlist: I'm not in the hurry, I can wait just in case you can find something.. thanx

28th May 2004, 10:59 AM	#8
Netlist diyAudio Moderator Join Date: Jan 2003	All, The manual came in. Mail me and expect it in your box tomorrow. /Hugo

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