Monica Explodica

fergs1 · 22nd August 2006, 04:53 AM

greetings all. I am in need of help. I bought one of diyparadise monica 2 dacs and promptly fried it by hooking it up to 12vac instead of dc. It fried the resistoor across the 317 regulator (smokin') and so I replaced it with another 22ohm resistor but its still not working. Now money is tight and so it will be a while before I can commit to another one and so I'm wondering if it is fixable and If anyone has had experience with these could the help me to track down the fault and so I can replace damaged components.The really crap thing about this is that it was a gift and I never had the chance to enjoy it.Hope to hear from you electro hounds soon yours hopefully
cheers fergs

CJ900RR · 22nd August 2006, 10:02 AM

Well you have almost for sure burned the 317-regulator. My first recommendation to you is to replace that.

If you are lucky nothing has passed thru the regulater and you dont need to replace anything else, but there is no easy way to check that without replaceing the regulator.

Start there, and good luck!

Best regard's Carl-Johan (I burn electrics for a living

]

fergs1 · 23rd August 2006, 09:49 AM

greetings, well I replaced the reg but Monica still won't put out. Any ideas appreciated

cheers fergs
Its seems I just burn them for fun(turns face away to hide tears)

morpheus82 · 23rd August 2006, 09:58 AM

i don't wanna say this but...probably you killed the receiver...

sorry guy, do you have the schematic?can you post it?

CJ900RR · 23rd August 2006, 03:53 PM

Well i know what we do at work when a regulator is burned, we replace all other circuits connected to it...

Most IC's work at 3,3-5V DC, and that 12V AC must have fried them, or atleast some of them. As raikkonen said, do you have a schematic?

fergs1 · 23rd August 2006, 04:59 PM

I'm afraid there is no schematic as it is a commercial product but here are two pictures of the board, top and bottom showing the ic's. it looks nerve wracking all those tiny little pins. If I replace them I think I'll have to use lead out wires to a plug, unless of course these ic's are only surface mount? Let us know what you think Thankyou for taking an interest in a 'challanged' diyer. cheers fergs
http://diyparadise.com/dackit/monica2_detailed2.jpg
http://diyparadise.com/dackit/cs8414_reclocker.jpg

morpheus82 · 23rd August 2006, 05:10 PM

yes, i know that pictures...i thought you got the schematic buying it...otherwise, the cs8414 is only smd, you'll easily replace it with a little bit of patience...andypairo has some chips to sell, 6,50eur not bad...

dsavitsk · 23rd August 2006, 06:38 PM

I'd not bother trying to desolder and resolder on the same board. Pick up another pcb (and a 1545) from Yeo, and you can get all of the parts for ~$40.

morpheus82 · 23rd August 2006, 06:51 PM

hmm...sorry for my ignorance...yeo is the monica inventor?(diyparadise)

fergs1 · 24th August 2006, 11:05 AM

thanks for all your kind replies, I think getting an unstuffed board is a good idea,, trying to clean up all those tiny solder holes is simply going to take years off my life, and frying the dac has already taken care of that. I'm about to go on anual leave so when I get back I let you know how I go. so thanks again cheers fergs

22nd August 2006, 04:53 AM	#1
fergs1 diyAudio Member Join Date: Jan 2005 Location: melbourne	Monica Explodica greetings all. I am in need of help. I bought one of diyparadise monica 2 dacs and promptly fried it by hooking it up to 12vac instead of dc. It fried the resistoor across the 317 regulator (smokin') and so I replaced it with another 22ohm resistor but its still not working. Now money is tight and so it will be a while before I can commit to another one and so I'm wondering if it is fixable and If anyone has had experience with these could the help me to track down the fault and so I can replace damaged components.The really crap thing about this is that it was a gift and I never had the chance to enjoy it.Hope to hear from you electro hounds soon yours hopefully cheers fergs

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22nd August 2006, 10:02 AM	#2
CJ900RR diyAudio Member Join Date: Jan 2006	Well you have almost for sure burned the 317-regulator. My first recommendation to you is to replace that. If you are lucky nothing has passed thru the regulater and you dont need to replace anything else, but there is no easy way to check that without replaceing the regulator. Start there, and good luck! Best regard's Carl-Johan (I burn electrics for a living ]

23rd August 2006, 09:49 AM	#3
fergs1 diyAudio Member Join Date: Jan 2005 Location: melbourne	greetings, well I replaced the reg but Monica still won't put out. Any ideas appreciated cheers fergs Its seems I just burn them for fun(turns face away to hide tears)

23rd August 2006, 09:58 AM	#4
morpheus82 diyAudio Member Join Date: Oct 2004	i don't wanna say this but...probably you killed the receiver... sorry guy, do you have the schematic?can you post it?

23rd August 2006, 03:53 PM	#5
CJ900RR diyAudio Member Join Date: Jan 2006	Well i know what we do at work when a regulator is burned, we replace all other circuits connected to it... Most IC's work at 3,3-5V DC, and that 12V AC must have fried them, or atleast some of them. As raikkonen said, do you have a schematic?

23rd August 2006, 04:59 PM	#6
fergs1 diyAudio Member Join Date: Jan 2005 Location: melbourne	I'm afraid there is no schematic as it is a commercial product but here are two pictures of the board, top and bottom showing the ic's. it looks nerve wracking all those tiny little pins. If I replace them I think I'll have to use lead out wires to a plug, unless of course these ic's are only surface mount? Let us know what you think Thankyou for taking an interest in a 'challanged' diyer. cheers fergs http://diyparadise.com/dackit/monica2_detailed2.jpg http://diyparadise.com/dackit/cs8414_reclocker.jpg

23rd August 2006, 05:10 PM	#7
morpheus82 diyAudio Member Join Date: Oct 2004	yes, i know that pictures...i thought you got the schematic buying it...otherwise, the cs8414 is only smd, you'll easily replace it with a little bit of patience...andypairo has some chips to sell, 6,50eur not bad...

23rd August 2006, 06:38 PM	#8
dsavitsk diyAudio Member Join Date: Jan 2005 Location: Chicago	I'd not bother trying to desolder and resolder on the same board. Pick up another pcb (and a 1545) from Yeo, and you can get all of the parts for ~$40.

23rd August 2006, 06:51 PM	#9
morpheus82 diyAudio Member Join Date: Oct 2004	hmm...sorry for my ignorance...yeo is the monica inventor?(diyparadise)

24th August 2006, 11:05 AM	#10
fergs1 diyAudio Member Join Date: Jan 2005 Location: melbourne	thanks for all your kind replies, I think getting an unstuffed board is a good idea,, trying to clean up all those tiny solder holes is simply going to take years off my life, and frying the dac has already taken care of that. I'm about to go on anual leave so when I get back I let you know how I go. so thanks again cheers fergs

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