Performa 200

[unity]

Well if theres one, there may be more....

Its a shame, that board looks good otherwise.

 

[falen5]

just metered c66 and its good. looks like the solder was molten, flowed down with gravity, but there appears to be a thin layer of solder making the connections on most of them,

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no...........im not going there

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theres hundreds of resistors, caps, diodes ............there all the same............

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[falen5]

this one is gone im afraid. wont be doing anymore on this.

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thanks for all your help people

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[ROLLERMANZ]

Guys no i never baked this board .. I am 200% sure i never baked this board.. I got this board with its orignal capaictors on, when turned on no chime and a blank screen.. i then took them off, washed the board, left it outside for 2 days drying up then still used a hair deyer to dry the ports and all to make sure theres no water in it then recapped and put it in still no joy.. I then tried with different roms and still didnt work.. Which i where i think i put the roms upside down.. I then googled and found out that some vias need re soldering or renewing the joints so i took a soldering iron and renewed EVERY SINGLE JOINT on this board.. NO BAKING AT ALL .. The first and last time i ever baked a board in the oven was the cc board thats all.. I never believed in baking it anyways but when guys insisted on this then i tried with the cc and made it worse .. So no baking at all.. Whatever you see on this board, is me renewed the joints thats all .. Dont worry i did dry the board with leaving it outside .. I did not bake it ..

 

[uniserver]

**unless you used  heat gun instead of a hair dryer.

or the person before you baked it.

letting a board sit wet for 2 days is really not cool... always compressor dry these things off right after a wash.

there looked like 2 shorted areas on the cpu legs fallen.

also the sound I/C controls reset with these , many times i'v had to hot air off the sound IC, only to find rotted up traces, roted up pads. under it.

also I believe U14

ram chip goes bad,   from the cap goo.   its in other classic ii threads, i think the first 2 ram chips closest to the caps there can be subject to cooked ram chips.   ( witch the bad ram shows no physical signs of being dead, just maybe some rot on the legs.

so i think you should start with the ASC.

u14 maybe u13(replace)*1,  then ASC pads and traces (have to remove the IC),  EGRET *2

are all issues that arise with the Classic II.

Also BOMARC just completed his final Documentation and is going to be drafting up a schematic for this classic II

well the 4 rom chip version but they are mostly close enough... 

*1 you can scavenge a ram chip from a basically any mac that has 4mb soldered onboard.

even the 6100 with 8mb soldered on board.  even a LC depending on what parts boards you have lying around.

*2 EGRET,  you can use the EGRET from LC-I / LC-II if needed.  not sure if the EGRET from LC-3 works... 

however i do think the EGRET from a LC-III will work with the Color Classic, those also have ERGET issues ( cap goo related )

 

[ROLLERMANZ]

I didnt use a heat gun either .. That tiny bit of plactic melted on the floppy drive connector is when i was put the capacitors on, i touched the soldering iron my accident .. Ni heat gun or baking and i made sure t was fully dry before i flogged it into the machine ..

 

[ROLLERMANZ]

The guy before hadnt even touched it .. He never did anything with at all.. Thats why i said i recapped it which means he never touched it

 

[uniserver]

oh well those picture show that it was cooked.. its ok...  wither you did it or the holy ghost did it,  its been cooked.

but it doesn't look to be that bad from my perspective.

i think fallen's IRISH insanity...  + Bulldog like determination will make it work before too long... no worries.

 

[ROLLERMANZ]

No holy ghost did it .. It was never baked .. I only ever baked a cc board when u suggested and iknw i baked it in celcius .. But that was the only electronic thing i ever baked in my life ..the guy before me never baked it either ..

 

[falen5]

rollermanz - its not a witch hunt............its all good fun

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you did a great job on the recap......your best of the 5. Better than most of my recaps in my first few months.

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uniserver has put up some good things I can check..........so we'll have a look later.

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for all we know apple may have had a blown thermocouple on the day it was built. Could be something silly

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well have another go at it later on

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cheers

 

[falen5]

uniserver...........anybody!!!!

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which chip is the soundchip on these??

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cheers

 

[360alaska]

oh well those picture show that it was cooked.. its ok...  wither you did it or the holy ghost did it,  its been cooked.

but it doesn't look to be that bad from my perspective.

i think fallen's IRISH insanity...  + Bulldog like determination will make it work before too long... no worries.

 

[falen5]

holy ghost me ar$e 360alaska...........which chip is the sound chip?? -

 

[falen5]

anybody know what U1, U2 and U3 are for as well

 

[uniserver]

UB11 ?

 

[uniserver]

U4  (DFAC) sorry

 

[uniserver]

U1 U2 are AUDIO amplification.   well i know U1 is for sure.

 

[falen5]

thanks uniserver.

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well...............U1 just caught fire...........and half of it exploded.........

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even worse...........I was filming.

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feck!!!

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[uniserver]

that will make a good video!  do post i want to see   haha

 

[techknight]

Ive had plenty of things catch fire, but I have yet to see it happen on a logic board. Thats nuts.