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Any thoughts on this....it arrived!!!

This is the dreaded analog board/screen test. This scared me the most....alas with good reason ....but it had to be done........

 
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That poor board... If it were me, it would probably be charred and broken in half!

I don't think Santa will get through with your cries for a new Apple II board. He'll probably give you socks and an Apple IIe board to taunt you!! ;)

 
carboy....arsebiscuts on that.......it can be fixed,,,,,,,,with or without the education or spare parts.( besides the 50 or so new sockets and chips!!!!!!!!!!)

the will to try is more important for the survival of all old machines........they are all important

ps.......you got a shiny apple ii you can 'lend' me........

happy christmas man,......to you and all

 
liketech and trash80........i wish you a peaceful and joyful christmas - i am on me own, the dog is happy, i disdnt kill myself......AND THE SCREEN CAME TO LIFE!!!.... im happy out......now the hard drive......and then the mother of all problems of a motherboard..........but thanks to your good selvs im in good hands.............god bless

 
Glad the monitor works so far. Its funny listening to you saying your gonna get blown up. Theres not enough power or current there to blow yourself up unless its a direct hard short across the AC line, then youll see a flash/pop and circuit breaker trip. 

 
to sumarise from a standpoint of stat...........i am now left with the motherboard and the hard drive

but lastnight i was thinking about it

this is not windows........this is not OS10..........if all is reconnected this thing will not boot to some beautiful GUI

it will be dead

it will need drivers from 5.25 floppys to activate shit

the scsi system!!!!.........will that have drivers contained in rom???

i8f i get it all working physically.....i wont be able to make anything work without the floppys....the dribers to turn stuff on

im guess here........but i think i might be right

please tell me it will all be in the roms of the plug in cards...........if they work

 
hey techknight...............jesus im glad to hear you..........all i know is flyback transformenr........allot of volts.....but feck it man it came on

its good

thats all the power system figured out.........i have rebuilt apple ii psu's )my own apple ii e's) so im happy with them

jesus man.....you say no danger!!!........hahahahah.....you should of been stood next to me.........i was shaking...........but it worked

tomorow i will recap the hard drive ( 2 tantulam caps you pointed out)- i have washed the board and will re assemble,

will test it on modern PSU for saftey

as for the motherboard..............jasus wept

whats the story with the spring on the crt..............where does it go

 
can i discharge this thing by running wire from annode cap to chassis ground...........will have to work on it tomorow

this was a good day - yesterday was a bad motherboard day

 
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the spring is the CRT ground, it sits on the outside aquadag coating thats on the CRT, to ground it. So it doesn't arc. 

the 5MB profile board has a ROM on it, so i can only assume if the drive and hardware is good, it will possibly boot into ProDOS. 

Otherwise, you need ADTpro and an audio cable hooshmoy so you can get the correct images for the Profile drive setup on floppy disks. 

 
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Thanks for all the help people. 'aquadag coating'  you learn something new everyday  - cheers Techknight

Had a go at the harddrive today. Replaced the 2 tantulam caps, cleaned the board, plugged it into modern psu

the psu would not start

checked the molex connector on the control board, The 5volt is shorting to the ground

found that the short is gone when i remove the boruns chip 16-3-221-331 - a network resistor - what do they do? 

I worked in Boruns in cork - we made these things..... just my luck!!!!!

I think i blew the board the other day when first plugged it in.

Just above the boruns chip there is a kind of dip switch chip with 2 of the connections broken. looked at it with a magnifying glass and cant tell if they were purposely broken or wether they were burnt out

will order a replacement chip.....bout all I can do.

harddrive controler.JPG

 
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could someone tell me if these are the correct replacement

http://www.ebay.ie/itm/20x-BOURNS-4116R-003-221-331-RESISTOR-DUAL-TERM-16-220-330-OHM-2-DIP-16-/171442887740?hash=item27eacadc3c:g:BmMAAOSwRLZUBC5M

Techknight - you are right once again.  should never of plugged the drive into that crazy psu the guy built.

The modern psu must of detected the short and refused to start. I have a bad feeling i blew the board.

I cannot find anything on google about this drive so if its blown then then so is the whole project

im a dumbass

 
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I think that is a Tandon drive. Probably 5MB.

Edit: I looked at one of the other pics and see that it is a Tandon drive... Looks like it is a TM600 model

 
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falen, don't give up. This project is awesome.

If I'm not mistaken, the hard drive is toast now. But that's not such a big deal. There are replacements/alternatives.

rickrob is on the right track. You should re-check the label on the drive. That drive seems to be popular in commodore circles. There must be an emulator somewhere too.

And if the A2-motherboard is beyond repair, I'm sure someone here has a working one sitting in a closet somewhere.

Edit: sometimes bad stuff happens. I once killed a drive too. 

 
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just having a bad night people - cant sleep so keep looking at the board - have to wait on parts

should never of plugged it in to that power supply the first time - you ever do something and you know its a bad idea - drives me crazy!

however i did find from looking at pictures i took of it before i stripped it that the 'dip switch' thingy, above the bourns chip, with the 2 pins removed was like that before i plugged it in

taking loads of pictures at every stage is a great help - would of never got the analog board back in without the pictures i took - 3 wires broke off from one of the modded boards - had the picture of where they went 

i have 3 good iie's and 1 dead - going to look at the motherboard - might be able to scavange parts from the dead iie

 
the burnable dip switch is normal. Leave it alone. 

Bourns filters are known for shorting as well. Happens all the time in the SE and SE/30. 

 
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