Need help. Who can repair a damaged MP3@64

[AmigaNut08]

Hi all,
not too long ago i fried the sh!t out of my MP3@64 while trying to connect it to a Buddha phoenix card in my A2000. I seem to have damaged the small chip with 8 legs that sits in the middle of the mas chip and the crystal as well as the 2 blue colored radial electrolytic capacitor's. There is also a small diode (think thats what it is) that sits near the 8 legged chip that looks toasted as well.

After the damage was done i was about to throw the MP3@64 in the trash, as each time i looked at it, i kept getting angry, but then i thought, i'll hold on to it and maybe see if i can get it repaired. I know the parts that need replacing are really cheap to buy , but i am hopeless at trying any sort of repairs that require the use of a soldering iron.

Is anyone here able to repair this little card or know of someone i can send it to, to have it repaired before i get a hammer to it as each time i look at it i get flashbacks of the day i fried it.

Cheers

 

[rkauer]

Re: Need help. Who can repair a damaged MP3@64

I think your only bet is send it back to Jens (Individual Computer's owner). BTW: there is no diode in the board.

Black "thingies" are SMD resistors, black "thingies" with multiple legs are packs of resistors in parallel (all with same value), brown ones are SMD capacitors (typically 100nF for decoupling signals and filter ripple).

Look an amplified image at Big Book of Amiga Hardware. :wink:

 

[AmigaNut08]

Re: Need help. Who can repair a damaged MP3@64

Thanks for your reply and the link to the picture. That thing i referred to as a diode is just to the left of the HOSONIC labeled crystal. Well pretty much everything that i mentioned which is sitting in between the mas chip and the crystal is pretty much fried. One radial capacitor may have got away wth it but its best to have them all replaced. The heat in one of the radial capacitors was so intense that it blackened brown plastic around the mass chip.

Well i have just sent Jens a message and now await a reply.

Cheers

 

[Zetr0]

Re: Need help. Who can repair a damaged MP3@64

@AmigaNut

normally I am a sucker for hard luck or doomed cases, however this one I think is beyond the beyond

you will need to relpace :-

1. 3.3 volt regulator (GS1117AX)

2. Altera EPM7032AE (32 macro cell CPLD)

This stores the addressing code for the MAS, you cannot download the code and program it
As the altera EPM7x series is ONLY 3.3volt tollerant the power off the miggy has most likely killed it!

sorry m8, its a good as dead to be honest.

 

[AmigaNut08]

Re: Need help. Who can repair a damaged MP3@64

@AmigaNut

normally I am a sucker for hard luck or doomed cases, however this one I think is beyond the beyond

you will need to relpace :-

1. 3.3 volt regulator (GS1117AX)

2. Altera EPM7032AE (32 macro cell CPLD)

This stores the addressing code for the MAS, you cannot download the code and program it
As the altera EPM7x series is ONLY 3.3volt tollerant the power off the miggy has most likely killed it!

sorry m8, its a good as dead to be honest.

The 3.3 volt regulator and the Altera chip look fine. There's no sign of heat/damage at all there. The only chip that really fried and caused damage to the resistors and capacitor is the 8 legged chip (CM334K XAH0525). This chip got that hot that it's legs are practically melted and the surrounding circuit board where the legs are soldered to has a ditch from melting as well.

Well i have found someone local that is going to replace the above mentioned bits for me. If it still does not work, then i dont think i will be buying another one as i have been neglecting my other interest that's been sitting in the garage for too long.

 

[Zetr0]

Re: Need help. Who can repair a damaged MP3@64

y'know, you could be very lucky Amiganut

if you can find a replacement "CM334K XAH0525" I would be happy to replace the exisitng one for you, all you have to pay would be postage to here and back... should be cheap via air, theres not much weight to mp@64.

this WONT garuntee that it works, just I can replace the unit for you.

good luck m8y

 

[AmigaNut08]

Re: Need help. Who can repair a damaged MP3@64

Thanks for the offer Zetr0, thats really kind of you but i have already got someone local that is going to have a look at it. I am going to send the card to a friend who is going to do the work on it. He assured me of having all the bits that needed replacing, so we'll see what happens when the burnt bits have been replaced.

Cheers

 

[AmigaNut08]

Re: Need help. Who can repair a damaged MP3@64

I think your only bet is send it back to Jens (Individual Computer's owner). BTW: there is no diode in the board.

Black "thingies" are SMD resistors, black "thingies" with multiple legs are packs of resistors in parallel (all with same value), brown ones are SMD capacitors (typically 100nF for decoupling signals and filter ripple).

Look an amplified image at Big Book of Amiga Hardware. :wink:

Just a quick question. The thing you are referring to with multiple legs is that the chip with the following on it, CM334K XAH0525. The only thing i could find locally that resembles this chip is the 555 timer, found here, http://www.dse.com.au/cgi-bin/dse.store ... View/Z6145

I told my friend who is going to replace the damaged bits that it was resistors in parallel when i had a brief conversation on the phone to him. Anyway i am sure he'll let me know what it is once he has the hardware at hand.

 

[rkauer]

Re: Need help. Who can repair a damaged MP3@64

Not even close!

You need a Digital-to-Analogic Converter (DAC) made from Cirrus Logic, called CS4331 or equivalents (CS4333, CS4334 up to CS4339). All are the same piece of hardware from what I checked out.

May be hard to find.

 

[Zetr0]

Re: Need help. Who can repair a damaged MP3@64

found a hit on eBay

8 Pin Stereo D/A Converter for Digital Audio CS4331 - Buy It Now USD $8.99 + $5 pnp

see we care around here on AmiBay

 

[AmigaNut08]

Re: Need help. Who can repair a damaged MP3@64

found a hit on eBay

8 Pin Stereo D/A Converter for Digital Audio CS4331 - Buy It Now USD $8.99 + $5 pnp

see we care around here on AmiBay

Yes, you really do care around here. Thanks so much Zetr0 and rkauer. I really appreciate your help.

I'll purchase the 8 Pin Stereo Converter from ebay.

@ Zertr0
I may take you up on your offer at replacing the 8 pin chip. Would you also be able to replace the other 3 damaged components. If you could buy the parts to replace the damaged ones , i'll pay you for them, and your work before you post it back. I'll purchase the 8 pin Stereo Converter from ebay and send you a pm when i receive it so we can exchange details for postage.

Cheers

 

[Zetr0]

Re: Need help. Who can repair a damaged MP3@64

@AmigaNut08

I dont mind helping you out, but please remember there maybe more damage than just the A/D converter and regulator.

if the CPLD is screwed then the device.... is useless excpet for parts I am afraid.

the CPLD is programmed by the developer / distributer and as such is proprietary, and not freely availabe to download, you could ask Jens, he may be able to help repair the whole thing, so its worth a shot.

So with that my friend, please know I dont mind replacing any caps / chips regulators etc, all you need to worry about its parts and postage

 

[AmigaNut08]

Re: Need help. Who can repair a damaged MP3@64

Hi again,
Just letting you know that i received the 8 pin stereo D/A converter in the mail today. This chip is about 2mm wider than the original one thats on the MP3@64 giving it a more square look. Will this cause you any trouble Zetr0, when fitting it to the board?? Also, can anyone help out with the values of the other mentioned items that are damaged, or possibly damaged as i have no idea what i am looking for. From what i see, the capacitors (2 black round thingies with bits of light blue) have 85 C followed by some other numbers below it that start with 89901 and the small SMD capacitor (the little brown thing) i have no idea what value it has.

Cheers

 

[Zetr0]

Re: Need help. Who can repair a damaged MP3@64

Hi again,
Just letting you know that i received the 8 pin stereo D/A converter in the mail today. This chip is about 2mm wider than the original one thats on the MP3@64 giving it a more square look. Will this cause you any trouble Zetr0, when fitting it to the board??

Hey-up,

as long as its PIN compatible and has the same pitch for the legs (and fits in place) it will be fine.

Also, can anyone help out with the values of the other mentioned items that are damaged, or possibly damaged as i have no idea what i am looking for. From what i see, the capacitors (2 black round thingies with bits of light blue) have 85 C followed by some other numbers below it that start with 89901 and the small SMD capacitor (the little brown thing) i have no idea what value it has.

Cheers

caps wont be a problem there easly replaced, the mono cap (small little brown thing) should be fine, but I do so strongly suggest you contact Jens at individual computers see if he can offer any assistance.

 

[AmigaNut08]

Re: Need help. Who can repair a damaged MP3@64

Hi Zetr0,
By saying "as long as its PIN compatible and has the same pitch for the legs" do you mean the legs are spaced out the same, then yes the legs are pretty much the same, but the only thing is, because of the chip being that little bit more longer, the pins may miss the original holes that the current chip is soldered to. (hope that makes sense)

Anyway, I did contact Jens at individual computers way back when i started this thread. I am yet to get a response from him. I'll try contact him again when i get a chance.

Cheers