Search found 494 matches

by MRAtari
Tue Jul 26, 2011 8:18 am
Forum: Hardware
Topic: Atari Mega STE trying to make to back to life
Replies: 4
Views: 975

Re: Atari Mega STE trying to make to back to life

first of all can you tell me all the parts you changed on the PSU to repair it? what parts were dead? white screen on colour monitor is a really common problem with these machines could be a number of things BUT i have found many times the U501 surface mounted chip right in front of the VME expansio...
by MRAtari
Sun Jul 24, 2011 8:29 pm
Forum: Hardware
Topic: STe PSU repair (Mitsumi 68-4231A)
Replies: 49
Views: 11784

Re: STe PSU repair (Mitsumi 68-4231A)

never seen R114 or D105 go but hey if you replace them with the same or compatible parts then ok

test it under load formatting a disk and adjust the 5v pot to get it at 5v

then let it run for 30 mins or so
by MRAtari
Sun Jul 24, 2011 4:41 pm
Forum: Hardware
Topic: STe PSU repair (Mitsumi 68-4231A)
Replies: 49
Views: 11784

Re: STe PSU repair (Mitsumi 68-4231A)

if R101 and R106 are dead then Q1 / Q2 and PC 101 will be dead too repaired loads of these and it was always those parts go together if you don't replace PC 101 and do replace the others you will blow all the new parts again! so replace those 5 parts i used a CNY65 in place of the PC 101 you just ha...
by MRAtari
Sat Jul 23, 2011 5:37 pm
Forum: Hardware
Topic: ICD LINK hard drive set up jumpers and help needed please
Replies: 18
Views: 1380

Re: ICD LINK hard drive set up jumpers and help needed pleas

i was trying to use a ST34371WC and a ST318404LC 80 pin scsi drive using 1 of those 80 pin to 50 pin converters

drives spin fine but couldn't get the ICD LINK 2 LED to illuminate
by MRAtari
Fri Jul 22, 2011 1:36 pm
Forum: For sale / Wanted
Topic: WANTED - Atari SC1435 monitor.
Replies: 1
Views: 560

Re: WANTED - Atari SC1435 monitor.

i have a spare one

fully working / no yellowing / includes cable (and possibly a manual)

£60 plus shipping

:)
by MRAtari
Wed Jul 20, 2011 2:38 pm
Forum: Professionals
Topic: Falcon with quiet sound output
Replies: 25
Views: 2123

Re: Falcon with quiet sound output

well it's NOT the codec, just changed it

maybe the Yamaha IC?
by MRAtari
Thu Jul 14, 2011 7:30 pm
Forum: Professionals
Topic: Falcon with quiet sound output
Replies: 25
Views: 2123

Re: Falcon with quiet sound output

ok so on closer inspection i see the following 2 mods: standard bass boost mod: •Change C58 and C59 from 100PF to 1000PF •Change R123 anr R130 from 10K to 15K •Change R59 and R68 from 100K to 4.7K •Change C95 and C90 from 0.033yF to 1K Resistor microphone input gain mod: •Remove R56, R57, R90, R92, ...
by MRAtari
Thu Jul 14, 2011 12:37 pm
Forum: Professionals
Topic: Falcon with quiet sound output
Replies: 25
Views: 2123

Re: Falcon with quiet sound output

i have an FDI and can record a CD in cubase audio which i have done

and yes when playing back or recording the sound output is low
by MRAtari
Wed Jul 13, 2011 9:48 pm
Forum: Professionals
Topic: Falcon with quiet sound output
Replies: 25
Views: 2123

Re: Falcon with quiet sound output

ok

are these U22 / U26 or U29?

i did have to add U22 and U26
by MRAtari
Wed Jul 13, 2011 9:39 pm
Forum: For sale / Wanted
Topic: WANTED Falcon to SM 124/SC 1224 monitor adaptor
Replies: 7
Views: 1445

Re: WANTED Falcon to SM 124/SC 1224 monitor adaptor

thanks but the seller doesn't accept paypal

forget that then!

missed one that went for 1 euro last week! :x
by MRAtari
Wed Jul 13, 2011 6:01 pm
Forum: Professionals
Topic: Falcon with quiet sound output
Replies: 25
Views: 2123

Falcon with quiet sound output

been working on a newly repaired falcon and all seems well apart from very low volume sound output (even the keyboard click is quiet) i would say approx 50% of normal level can anyone suggest why this could be? headphone socket / internal speaker / TV port and monitor port sound are all quiet so far...
by MRAtari
Wed Jul 13, 2011 2:36 pm
Forum: For sale / Wanted
Topic: WANTED Falcon to SM 124/SC 1224 monitor adaptor
Replies: 7
Views: 1445

Re: WANTED Falcon to SM 124/SC 1224 monitor adaptor

you mean German ebay

yeah i've seen them, but none now when i need 1!
by MRAtari
Tue Jul 12, 2011 7:53 pm
Forum: For sale / Wanted
Topic: WANTED Falcon to SM 124/SC 1224 monitor adaptor
Replies: 7
Views: 1445

WANTED Falcon to SM 124/SC 1224 monitor adaptor

does anyone have 1 of the above adaptors fo the falcon so you can view the screen via an SM 124 / SC 1224 Atari monitor

i need this just for a testing purposes
by MRAtari
Tue Jul 12, 2011 7:48 pm
Forum: For sale / Wanted
Topic: WANTED: TOS 4.04 for Falcon
Replies: 6
Views: 839

WANTED: TOS 4.04 for Falcon

can anyone out there burn me a few TOS 4.04 roms for the Falcon?

let me know here or via PM

:)
by MRAtari
Sat Jul 09, 2011 7:45 pm
Forum: For sale / Wanted
Topic: looking for GFA basic Interpreter / compiler 3.5 disks
Replies: 2
Views: 565

looking for GFA basic Interpreter / compiler 3.5 disks

hi all

as the title says

i'm looking for the 2 disks if they are available to download as 1 of mine is corrupt i have found! :x
by MRAtari
Fri Jul 08, 2011 6:48 pm
Forum: Professionals
Topic: making a null modem cable for testing a dead falcon using PC
Replies: 1
Views: 417

making a null modem cable for testing a dead falcon using PC

hi all

can anyone tell me the pinouts for making up a null modem cable so i can test a dead falcon

i may use a PC via Hyperterminal or either an STE

any advice would be appreciated on this if anyone has done if before...like how to connect it up via Hyperterminal

thanks
by MRAtari
Tue Jul 05, 2011 4:39 pm
Forum: Hardware
Topic: SM 124 works but long delay in switching on..why?
Replies: 9
Views: 769

Re: SM 124 works but long delay in switching on..why?

which type is it? there were 2

the early type has the big transformer and PSU mounted on the side

the later type has the psu incorporated inthe main pcb
by MRAtari
Wed Jun 29, 2011 5:30 pm
Forum: Hardware
Topic: [fixed] Another 'what psu does this floppy drive need'
Replies: 13
Views: 977

Re: Another 'what psu does this floppy drive need'

if you looked more closely at your picture you would see that green resistor is fried! and the soldering is terrible, i can see missing solders and solder that bad it could even be shorting across pins for that resistor to be fried it prob coz some fool stuck a very high voltage psu it it and killed...
by MRAtari
Fri Jun 24, 2011 6:46 pm
Forum: Hardware
Topic: Mega STE killed by dodgy PSU! (high voltage)
Replies: 4
Views: 551

Re: Mega STE killed by dodgy PSU! (high voltage)

just out of interest though what does control the 12v and 5v rails on these power supplies?

i mean it worked fine but was just outputting high voltages...
by MRAtari
Thu Jun 23, 2011 10:12 pm
Forum: Hardware
Topic: STE no sound BUT press reset and sound appears!
Replies: 4
Views: 538

Re: STE no sound BUT press reset and sound appears!

hi

it always does it when switched off and then switched on

even if the machine is warm it will have no sound when switched off and then on again

but press reset and reboot and sounds comes back
by MRAtari
Thu Jun 23, 2011 6:37 pm
Forum: Hardware
Topic: STE no sound BUT press reset and sound appears!
Replies: 4
Views: 538

STE no sound BUT press reset and sound appears!

STE that has baffled me for ages it works fine the motherboard but when initially switched on and it goes to desktop there is no sound, not from TV speaker or stereo outputs press reset, let it reboot and sound appears! if fact you can kind of hear a "pop" through the speaker when reset is...
by MRAtari
Thu Jun 23, 2011 6:33 pm
Forum: Hardware
Topic: Mega ST PSU - can i use this replacement part?
Replies: 5
Views: 533

Re: Mega ST PSU - can i use this replacement part?

well tested it and......nothing no output at all from PSU but no blown fuses either! and the heatsink on the primary side starts getting warm when switched on as normal maybe it is ok and the psu has other issues, i dunno as i never did have it working checked all caps and diodes all ok, it's really...
by MRAtari
Wed Jun 22, 2011 2:51 pm
Forum: Hardware
Topic: help identifying part on MP210A Marpet upgrade board
Replies: 5
Views: 587

Re: help identifying part on MP210A Marpet upgrade board

any idea what the voltage would be for this?

i can get them at 16v / 35v / 50v etc

would 16v be ok? (obviously logic would only be 5v anyway)
by MRAtari
Tue Jun 21, 2011 8:41 pm
Forum: Professionals
Topic: Falcon: The final re-casing?
Replies: 60
Views: 7354

Re: Falcon: The final re-casing?

maybe of interest to some but i know of an original Soundpool 19" green rack case available which has the extra holes on the back for the FDI and audio in/outs sadly can't find a picture anywhere on the web it's unbadged and brand new / boxed not sure of a price yet but it won't be less than £1...
by MRAtari
Wed Jun 15, 2011 9:57 pm
Forum: Professionals
Topic: Falcon prob (dead then works on reset press)
Replies: 20
Views: 2257

Re: Falcon prob (dead then works on reset press)

where is C7?

ontop or underneath the board? can't find it anywhere on mine...

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