meridian 203 - distortion.

the-extremist02 · 1st May 2008, 01:41 PM

Hi Guys, Im new here but I always have a look around.

I bought a Meridian 203 DAC second hand for 25.00 of EBay, it was noted as having distortion...I thought, bugger it, I'll take a chance, maybe I can fix it!

Anyhoo, I cant! I have the schematics from Meridian (nice guys) and the prob is distortion above a certain frequency on both channels, I have tried either input toslink and analog but its the same...Any ideas guys??? Ive been quoted over 125.00 to get it looked at by Meridian and Im hoping it might be something I can do myself (with my littel soldering experience) maybe just gutting some old parts and re solderig new ones??

Or anyone want to fix it for me in good will? I'll pay for carriage there and back..oh and Id pay for parts id they need replacing...Need somone honest and reliable though..Im quite poor at mo!

Cheers guys, hope someone can help.

Ian

kevinkr · 1st May 2008, 05:02 PM

Can't trouble shoot this thing blindly.. Do you have a dvm, and can you do simple voltage and resistance measurements?

the-extremist02 · 1st May 2008, 07:10 PM

No, Im not electrically trained. I wouldnt know what id be measuring for...

I ws hoping to open the box and see a black broken bit! one soldering iron later a replacement part fitted...not the case

kevinkr · 1st May 2008, 07:55 PM

Perhaps you can still get a meter, and I and others can direct you to specific points to measure as long as you can identify them, otherwise your best recourse would be to find a nearby kind hearted fellow forum member to help you out.

the-extremist02 · 1st May 2008, 09:35 PM

I think im going to need all the help i can get on this one as i have no idea!
If i get a meter what am i checking for and against?

Do people here take projects on for other members to mod their items for fees? I think Im in over my head!...lol, im coming across as a right pansy on this!
Knew I should have stayed in school and studied.!

Mooly · 2nd May 2008, 11:57 AM

Distortion rises with frequency. Not with amplitude ? Very strange. I think anyone would struggle with this. Golden rule, check ALL supplies are correct and in tolerance. Even if you pin it down to an I/C I think you would have difficulty removing and replacing the SMD packages particularly if you have not worked on "the small stuff" A scope and some test CD's are a minimum.
Sorry it's not more positive.
Karl

the-extremist02 · 19th May 2008, 03:05 AM

Thanks Guys,

I give in, I have no ideas...I'll flog it on ebay and see if anyones up for the challenge themselves...thanks anyway

1st May 2008, 05:02 PM	#2
kevinkr diyAudio Moderator Join Date: Sep 2004 Location: Boston, Massachusetts Blog Entries: 6	Can't trouble shoot this thing blindly.. Do you have a dvm, and can you do simple voltage and resistance measurements? __________________ www.kta-hifi.net

1st May 2008, 07:55 PM	#4
kevinkr diyAudio Moderator Join Date: Sep 2004 Location: Boston, Massachusetts Blog Entries: 6	Perhaps you can still get a meter, and I and others can direct you to specific points to measure as long as you can identify them, otherwise your best recourse would be to find a nearby kind hearted fellow forum member to help you out. __________________ www.kta-hifi.net

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1st May 2008, 07:10 PM	#3
the-extremist02 diyAudio Member Join Date: Sep 2005	No, Im not electrically trained. I wouldnt know what id be measuring for... I ws hoping to open the box and see a black broken bit! one soldering iron later a replacement part fitted...not the case

1st May 2008, 09:35 PM	#5
the-extremist02 diyAudio Member Join Date: Sep 2005	I think im going to need all the help i can get on this one as i have no idea! If i get a meter what am i checking for and against? Do people here take projects on for other members to mod their items for fees? I think Im in over my head!...lol, im coming across as a right pansy on this! Knew I should have stayed in school and studied.!

2nd May 2008, 11:57 AM	#6
Mooly diyAudio Member Join Date: Sep 2007	Distortion rises with frequency. Not with amplitude ? Very strange. I think anyone would struggle with this. Golden rule, check ALL supplies are correct and in tolerance. Even if you pin it down to an I/C I think you would have difficulty removing and replacing the SMD packages particularly if you have not worked on "the small stuff" A scope and some test CD's are a minimum. Sorry it's not more positive. Karl

19th May 2008, 03:05 AM	#7
the-extremist02 diyAudio Member Join Date: Sep 2005	Thanks Guys, I give in, I have no ideas...I'll flog it on ebay and see if anyones up for the challenge themselves...thanks anyway

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