Amiga 1200 problem! please help me (noob) - Page 3

FOL · 25 August 2013, 00:56

Quote:

Originally Posted by Anders1984

ok my friends, here are som fotos of my mb. I havent made any soldering on this board, so if it isnt like this from stock someone else did it.

pic 1, my rev:
http://i40.tinypic.com/241k0lv.jpg

pic 2, E121R and E122R i guess i dont have the ferrite beads
http://i44.tinypic.com/154demq.jpg

pic 3, E121C and E122C missing
http://i39.tinypic.com/2wmq3ad.jpg

pic 4, all E125R,E125C and E123R is present, but i guess i have to remove E125C
http://i39.tinypic.com/ops8qe.jpg

so what do you say? do i need to fix this even if my system do not hang or lag when im in it? or do you belive this is the yellow screen issue?

Aslong as you installed the card correctly and didnt damage it (check to make sure there are no bent pins), then I would try the full timing fixes.

Anders1984 · 25 August 2013, 01:01

Quote:

Originally Posted by FOL

Aslong as you installed the card correctly and didnt damage it (check to make sure there are no bent pins), then I would try the full timing fixes.

It doesnt matter if the card is all way in or now, it still starts like 1 out of 10 so i think the problem is someting else.

all the pins seems ok, and i also got a new card with the same problem..

GadgetUK · 25 August 2013, 20:43

I suspect it's either capacitors, or does require the timing fixes. Just because it works 1 out of x reboots doesn't mean it's not those particular problems.

john1979 · 26 August 2013, 16:11

It's probably worth getting the recap done as you're going to need it done at some point in the future whether you like it or not, and at the same time get the timing fixes done. Maybe send it to Amigakit or someone else who offers these services.

Anders1984 · 28 August 2013, 10:32

ok so yesterday we tried almost everyting!

first we tried my mb with a blizzard 1260, worked perfect.
then we tried my aca with 2-3 different A1200 mb with different rev, and all the cards suffered with the same yellow screen!!!

then we tried to do all the timing fixes, still with the same problem!!! talk about garbage!!!

At last we tried with a aca1230 instead, and damn, it worked like charm! with all the 3 mb we tried!! even with half of the timing fixes done, without a noticing any difference (even the blizzard didnt notice the timing fix)

so now i have to return my aca1220 and replace it with a aca1230. This is the second aca1220 card i have with the same issue, so it seems someting with the 16Mhz card is not working with my or the other amigas. Hopefully the new aca1230 will work directly without a timing fix.

BUT! we noticed a even worse problem (that could be solved with the recap procedure maybe?)

in WB when the hd or diskdrive loads, the screen "flickers a little". for example, entering a drawer with a lot of icons makes the screen flicker, as soon as the icons are loaded the flicker disapears. its the same in the rgb port and the other yellow one (dont remember the namn)

anyone got any idea where to start?

(the other amigas we tried didnt have this issue so its someting with my mobo)

demolition · 28 August 2013, 10:35

Did you check with different power supplies as well?

As for the flicker, it could well be bad caps causing that.

Anders1984 · 28 August 2013, 10:40

Quote:

Originally Posted by demolition

Did you check with different power supplies as well?

As for the flicker, it could well be bad caps causing that.

yes we tried with my a1200 psu, my a500 psu and a modded pc supply.

ok. but which cap/caps?

demolition · 28 August 2013, 10:45

All the aluminium electrolytic ones.

GadgetUK · 28 August 2013, 12:59

That flicker is almost certainly cap related.

I feel for your pain related to timing fixes =\

I've been lucky. I have 2 1200s and both work perfectly with my ACA1220 despite having no timing fixes, and they both also run fine when I overclock the 1220 to 27Mhz.

Both of mine are different revisions - 1.4 and 2. Neither of them have had any new caps either. On the 1.4 I get a tiny bit of noise on boot and PCMCIA access which I attribute to some caps that probably do need replacing.

Good you've ruled out PSU - I did get black screen on a 1200 PSU and just use 500 PSU now as it seems more capable regards power.

Anders1984 · 28 August 2013, 19:55

yeah is feels pretty shitty right now, but in a week ill recieve the aca1230, hoping for the best :P

but which caps are related to grafic? seems bad to replace all the caps just to rule others out. the sound for example is perfect. why change them now?

prowler · 28 August 2013, 21:53

Quote:

Originally Posted by Anders1984

...but which caps are related to grafic? seems bad to replace all the caps just to rule others out. the sound for example is perfect. why change them now?

Think of it like an insurance policy, because they will all start to leak eventually, causing erosion of the pcb tracks, IC sockets and, in fact, anything metallic inside the case.

Anders1984 · 29 August 2013, 09:38

Ok ill do that then.

ill update this thread when the ive recaped or got the new aca.

demolition · 29 August 2013, 09:41

To experience the problems you have, the caps must have been leaking for many years and it is most likely that the rest are due to be replaced as well. It is much easier to do it before tracks get corroded through.

Anders1984 · 29 August 2013, 10:04

Quote:

Originally Posted by demolition

To experience the problems you have, the caps must have been leaking for many years and it is most likely that the rest are due to be replaced as well. It is much easier to do it before tracks get corroded through.

damn, this amiga is going to be better now then it was when it orginally was build

FOL · 29 August 2013, 14:33

Quote:

Originally Posted by Anders1984

damn, this amiga is going to be better now then it was when it orginally was build

Ok, You didn't really answer my question. Check the ACA connector.
You said you tried three different motherboards and had same result.

Im abit concerned as plugging it in and out alot of times, you may have damaged it. I have seen it before and it can cause any number of random things to happen, yellow screen, no Fast RAM, booting with guru's.

Anders1984 · 29 August 2013, 20:13

Quote:

Originally Posted by FOL

Ok, You didn't really answer my question. Check the ACA connector.
You said you tried three different motherboards and had same result.

Im abit concerned as plugging it in and out alot of times, you may have damaged it. I have seen it before and it can cause any number of random things to happen, yellow screen, no Fast RAM, booting with guru's.

Both the cards were new and seemed ok, i couldnt see any damage...

ChrisUnionNJ · 29 August 2013, 22:01

I have the ACA1220 and when I first plugged it in my 2B it worked
off and on and then got worst so I swapped to a 1D4 and so
far I have had no problems..

Anders1984 · 04 September 2013, 20:08

got the aca 1230 today, and it works steady as rock!

thank god!

now the only issue is the flickering screen. we will recap it and see.

GadgetUK · 05 September 2013, 16:15

Its strange how the ACA1230 works without a problem? Makes me wonder if the ACA1220 has a design flaw or something?

Anders1984 · 06 September 2013, 18:46

Quote:

Originally Posted by GadgetUK

Its strange how the ACA1230 works without a problem? Makes me wonder if the ACA1220 has a design flaw or something?

yeah its very wierd.

i even tried 2 different aca1220 with the same result...

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
my amiga 1200 problem	herakleus	Hardware mods	8	25 January 2013 15:32
Amiga 1200 IDE-->CF Problem	mange_lars	support.Hardware	1	05 November 2009 05:16
Amiga 1200 Problem	LazerBall	support.Hardware	6	06 October 2006 20:52
problem with an amiga 1200 motherboard	whitebird	support.Hardware	17	04 June 2006 12:06
Amiga 1200 keyboard problem	wlcina	support.Hardware	6	13 February 2005 14:09

25 August 2013, 20:43	#43
GadgetUK Registered User Join Date: Mar 2013 Location: Manchester Posts: 189	I suspect it's either capacitors, or does require the timing fixes. Just because it works 1 out of x reboots doesn't mean it's not those particular problems.

26 August 2013, 16:11	#44
john1979 Registered User Join Date: Jun 2012 Location: UK Age: 44 Posts: 748	It's probably worth getting the recap done as you're going to need it done at some point in the future whether you like it or not, and at the same time get the timing fixes done. Maybe send it to Amigakit or someone else who offers these services.

28 August 2013, 10:32	#45
Anders1984 Registered User Join Date: Aug 2013 Location: Stockholm / Sweden Age: 39 Posts: 47	ok so yesterday we tried almost everyting! first we tried my mb with a blizzard 1260, worked perfect. then we tried my aca with 2-3 different A1200 mb with different rev, and all the cards suffered with the same yellow screen!!! then we tried to do all the timing fixes, still with the same problem!!! talk about garbage!!! At last we tried with a aca1230 instead, and damn, it worked like charm! with all the 3 mb we tried!! even with half of the timing fixes done, without a noticing any difference (even the blizzard didnt notice the timing fix) so now i have to return my aca1220 and replace it with a aca1230. This is the second aca1220 card i have with the same issue, so it seems someting with the 16Mhz card is not working with my or the other amigas. Hopefully the new aca1230 will work directly without a timing fix. BUT! we noticed a even worse problem (that could be solved with the recap procedure maybe?) in WB when the hd or diskdrive loads, the screen "flickers a little". for example, entering a drawer with a lot of icons makes the screen flicker, as soon as the icons are loaded the flicker disapears. its the same in the rgb port and the other yellow one (dont remember the namn) anyone got any idea where to start? (the other amigas we tried didnt have this issue so its someting with my mobo)

28 August 2013, 10:35	#46
demolition Unregistered User Join Date: Sep 2012 Location: Copenhagen / DK Age: 43 Posts: 4,190	Did you check with different power supplies as well? As for the flicker, it could well be bad caps causing that.

28 August 2013, 10:45	#48
demolition Unregistered User Join Date: Sep 2012 Location: Copenhagen / DK Age: 43 Posts: 4,190	All the aluminium electrolytic ones.

28 August 2013, 12:59	#49
GadgetUK Registered User Join Date: Mar 2013 Location: Manchester Posts: 189	That flicker is almost certainly cap related. I feel for your pain related to timing fixes =\ I've been lucky. I have 2 1200s and both work perfectly with my ACA1220 despite having no timing fixes, and they both also run fine when I overclock the 1220 to 27Mhz. Both of mine are different revisions - 1.4 and 2. Neither of them have had any new caps either. On the 1.4 I get a tiny bit of noise on boot and PCMCIA access which I attribute to some caps that probably do need replacing. Good you've ruled out PSU - I did get black screen on a 1200 PSU and just use 500 PSU now as it seems more capable regards power.

28 August 2013, 19:55	#50
Anders1984 Registered User Join Date: Aug 2013 Location: Stockholm / Sweden Age: 39 Posts: 47	yeah is feels pretty shitty right now, but in a week ill recieve the aca1230, hoping for the best :P but which caps are related to grafic? seems bad to replace all the caps just to rule others out. the sound for example is perfect. why change them now?

29 August 2013, 09:38	#52
Anders1984 Registered User Join Date: Aug 2013 Location: Stockholm / Sweden Age: 39 Posts: 47	Ok ill do that then. ill update this thread when the ive recaped or got the new aca.

29 August 2013, 09:41	#53
demolition Unregistered User Join Date: Sep 2012 Location: Copenhagen / DK Age: 43 Posts: 4,190	To experience the problems you have, the caps must have been leaking for many years and it is most likely that the rest are due to be replaced as well. It is much easier to do it before tracks get corroded through.

29 August 2013, 22:01	#57
ChrisUnionNJ Amibay Mod/Staff Join Date: Jul 2010 Location: Union NJ Age: 61 Posts: 194	I have the ACA1220 and when I first plugged it in my 2B it worked off and on and then got worst so I swapped to a 1D4 and so far I have had no problems..

04 September 2013, 20:08	#58
Anders1984 Registered User Join Date: Aug 2013 Location: Stockholm / Sweden Age: 39 Posts: 47	got the aca 1230 today, and it works steady as rock! thank god! now the only issue is the flickering screen. we will recap it and see.

05 September 2013, 16:15	#59
GadgetUK Registered User Join Date: Mar 2013 Location: Manchester Posts: 189	Its strange how the ACA1230 works without a problem? Makes me wonder if the ACA1220 has a design flaw or something?

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)