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Search: Posts Made By: DigitalKeeper
Forum: support.Hardware 20 October 2020, 10:35
Replies: 705
Views: 297,340
Posted By DigitalKeeper
Lightbulb Nice; i'll have a look for it - Please make it...

Nice; i'll have a look for it - Please make it possible to integrate German and other languages, i.e. via "lang.txt" - then we can translate it ;)

Look at this - RomWizard - Very Cool Program:
...
Forum: support.Hardware 18 October 2020, 23:07
Replies: 12
Views: 3,979
Posted By DigitalKeeper
Thumbs up Hi SpeedGeek! Thx for this awesome Info's...

Hi SpeedGeek!


Thx for this awesome Info's about the A2630 :great

I would need this, coz some lack with the A2630 & A2091 with an A2000 Rev 6.2 Board -> "BUS load Problem's"
Forum: support.Hardware 22 August 2020, 13:10
Replies: 12
Views: 403
Posted By DigitalKeeper
Cool :banghead Argh - ya right! That schematic is...

:banghead

Argh - ya right! That schematic is from a Rev 6A; i'll have a look at the Rev 5.
Forum: support.Hardware 22 August 2020, 01:54
Replies: 12
Views: 403
Posted By DigitalKeeper
Lightbulb -> ...

->

https://s12.directupload.net/images/200822/temp/ganxt7ql.jpg (https://www.directupload.net/file/d/5919/ganxt7ql_jpg.htm)

<-
Forum: support.Hardware 21 August 2020, 20:40
Replies: 12
Views: 403
Posted By DigitalKeeper
Have a look at Denise; remove the IC - look for...

Have a look at Denise; remove the IC - look for corroded/bend Pin's and reseat it. Check the Movement; if it fail's again - check with another Denise, if it's ok.

If not -> have a look at RP401...
Forum: support.Hardware 19 August 2020, 11:11
Replies: 37
Views: 1,568
Posted By DigitalKeeper
Big grin Blizzard 1230 IV -> max. 250 Bucks; with SCSI...

Blizzard 1230 IV -> max. 250 Bucks; with SCSI Kontroller -> 300.- Bucks :)

All above get a rip-off.....
Forum: support.Hardware 14 August 2020, 02:51
Replies: 5
Views: 299
Posted By DigitalKeeper
defective U8 (CIA 8520) -> check "_SEL3" Line...

defective U8 (CIA 8520) -> check "_SEL3" Line :)
Forum: support.Hardware 05 August 2020, 13:24
Replies: 12
Views: 535
Posted By DigitalKeeper
Lightbulb Ramsey (U890) - Pin 15 (PWRUP) -> _FAIL MUST be...

Ramsey (U890) - Pin 15 (PWRUP) -> _FAIL MUST be at min. +4.8 Volt

AND

Gary (U150) - Pin 56 (Powerup) -> _FAIL MUST be at min.+4,8 Volt

if not -> the Board won't boot ;)

check the Power...
Forum: support.Hardware 17 July 2020, 11:05
Replies: 6
Views: 294
Posted By DigitalKeeper
Remove ALL ICs from socket -> check for corrosion...

Remove ALL ICs from socket -> check for corrosion and broken Pin's at/in Socket's AND ALL ICs. Clean the Pin's of the ICs -> reseat all IC's and have a look.

Looks like a typical failure of...
Forum: support.Hardware 16 July 2020, 23:30
Replies: 50
Views: 2,556
Posted By DigitalKeeper
Nice to hear! Have a look at the defect...

Nice to hear!

Have a look at the defect Floppy, would be interested, what type of failure are there...
Forum: support.Hardware 16 July 2020, 12:58
Replies: 5
Views: 302
Posted By DigitalKeeper
Lightbulb Have a look at the RCA contacts, often there are...

Have a look at the RCA contacts, often there are "Black" with Oxyd, if so - cleanning would help, or new RCAs :)

CIA-A -> IRQ Failure -> have a look at ALL Traces from/to the CIA - they must be...
Forum: support.Hardware 16 July 2020, 12:29
Replies: 5
Views: 302
Posted By DigitalKeeper
Lightbulb Please make some Photos of the Board i.e. Audio...

Please make some Photos of the Board i.e. Audio :)

No Sound or scrambled Sound -> the Audio Lines/Traces are often defective and/or broken from Leakage of the capacitors there.

I suppose, that...
Forum: support.Hardware 14 July 2020, 12:55
Replies: 10
Views: 452
Posted By DigitalKeeper
Lightbulb Check -> E406 <- for Short's, coz - sometimes...

Check -> E406 <- for Short's, coz - sometimes they are defective

That is the typical failure, if someone have the Power Connector of the Floppy plugged on false Position.

They are more "EMI"'s,...
Forum: support.Hardware 14 July 2020, 12:41
Replies: 50
Views: 2,556
Posted By DigitalKeeper
Lightbulb Please check, if the "_RDY" Signal comes out.... ...

Please check, if the "_RDY" Signal comes out....

State "high"...

-> DC Power is ok (Low Power, No Ready!)

and

-> a Floppy is inserted (No Disk, No Ready, i.e. failure of Disk Insert...
Forum: support.Hardware 12 July 2020, 16:03
Replies: 4
Views: 227
Posted By DigitalKeeper
Lightbulb First thing to do -> open the drive and clean all...

First thing to do -> open the drive and clean all Mechanics; and the Head's! Isopropanol 99% would work fine!

DON'T PUSH OR PULL AT THE HEADS TO MUCH! There are very sensitive.

Second -> the...
Forum: support.Hardware 12 July 2020, 15:44
Replies: 16
Views: 777
Posted By DigitalKeeper
Lightbulb It looks like, that some Adress- or Data Lines...

It looks like, that some Adress- or Data Lines get Noise from ?!?

First -> check the DRAM "Decoupling" - coz of some oxyd from leakage fo the capacitors - there MUST all be fine, for a good...
Forum: support.Hardware 12 July 2020, 14:43
Replies: 50
Views: 2,556
Posted By DigitalKeeper
Lightbulb Please check, if Paula is ok....(i don't think,...

Please check, if Paula is ok....(i don't think, it's defective, but - who know's?)

https://s12.directupload.net/images/200712/temp/e2jv9ubq.jpg...
Forum: support.Hardware 11 July 2020, 00:35
Replies: 3
Views: 182
Posted By DigitalKeeper
Have a look at the "EMI's" E502 & E503 -> +12...

Have a look at the "EMI's" E502 & E503 -> +12 Volt & - 12 Volt -> look, if there is a "short" :)

Pin 2 of 1488 -> Input and the Output is Pin 3 - the Pin 3 of the 1488 come from Vee via a diode;...
Forum: support.Hardware 11 July 2020, 00:16
Replies: 16
Views: 777
Posted By DigitalKeeper
Lightbulb -> Z22x are only needed for the RF Output ->...

-> Z22x are only needed for the RF Output -> Bandfilter & Delay Line :)

If the leaking capacitors have damaged the Bandfilter/Delay Line, then this "can" be happen ;)

I think, there is another...
Forum: support.Hardware 10 July 2020, 23:59
Replies: 3
Views: 182
Posted By DigitalKeeper
Lightbulb The "1488 & 1489" are only for Seriell In-...

The "1488 & 1489" are only for Seriell In- Output; these ICs are sensitive, and go fast "defective".

The 1488 also "drives" the LED from/for Audio Filters - LED is off if the filters are...
Forum: support.Hardware 09 July 2020, 22:48
Replies: 39
Views: 3,356
Posted By DigitalKeeper
Lightbulb shortened Video Signal - Fuse F5 blown? :D ...

shortened Video Signal - Fuse F5 blown? :D

Have a look & check Fuse "F5"

https://s12.directupload.net/images/200709/temp/v8vu65c2.jpg (https://www.directupload.net/file/d/5875/v8vu65c2_jpg.htm)
Forum: support.Hardware 09 July 2020, 22:41
Replies: 3
Views: 327
Posted By DigitalKeeper
Lightbulb Lower Memory not found (first 256KB) ...

Lower Memory not found (first 256KB)


First thing to do -> remove ALL socketed ICs - have a look at the socket, clean the socket's; then have a look at the IC Pin's -> cleaning the Pin's is...
Forum: support.Hardware 09 July 2020, 22:27
Replies: 13
Views: 586
Posted By DigitalKeeper
Lightbulb Nice to hear, that the Machine is running :) ...

Nice to hear, that the Machine is running :)

In most case's -> Contact Problem's ;)

First to Do, if so:

-> removing ALL socketed ICs
-> check Socket's, clean Socket's
-> check Pin's of the...
Forum: support.Hardware 08 July 2020, 16:44
Replies: 50
Views: 2,556
Posted By DigitalKeeper
Lightbulb That is a Failure of the "Micro Switch" for the...

That is a Failure of the "Micro Switch" for the "Insert Disk" Signal :)

Ya can desolder the Switch, open it, clean the Silver Plates inside, coz they are "Black" with Oxyd, then re-assemble it and...
Forum: support.Hardware 08 July 2020, 02:00
Replies: 13
Views: 586
Posted By DigitalKeeper
Timing Failure at/by VSYNC -> Contact Problems at...

Timing Failure at/by VSYNC -> Contact Problems at Socket U7 and/or defective 8520 -> and/or Traces corroded/broken to/by U7

First -> check the Socket at U7 and the Pin's of the 8520; then change...
Forum: support.Hardware 07 July 2020, 21:50
Replies: 50
Views: 2,556
Posted By DigitalKeeper
Lightbulb Hey - Sounds Good :) :great Have a look at...

Hey - Sounds Good :) :great

Have a look at the Agnus Socket and Agnus itself - coz of Contact Problem's ;)

Otherwise - as i sad before - some Agnus have a Failure Problem with Higher...
Forum: support.Hardware 04 July 2020, 00:53
Replies: 705
Views: 297,340
Posted By DigitalKeeper
Affirmative! :) I've tested the Eproms...

Affirmative! :)


I've tested the Eproms with 150ns - and most of my A500 don't like it; the "120ns" would be run fine :agree


At this Point -> i only use the "120ns" Eproms, i.e. 27C400;...
Forum: support.Hardware 04 July 2020, 00:46
Replies: 20
Views: 944
Posted By DigitalKeeper
Lightbulb If the System is running "Stable", and the...

If the System is running "Stable", and the Software would be checked for errors -> the CV64 have sometimes issues with the RAM on the Card itself. Have a look for cold solder points, and for ICs with...
Forum: support.Hardware 23 June 2020, 15:57
Replies: 50
Views: 2,556
Posted By DigitalKeeper
Lightbulb For Serial Output -> check Paula and U8 (8520) ...

For Serial Output -> check Paula and U8 (8520)

As solarmon said - check EMI Filters, coz of short's or broken & Power at U38

https://s12.directupload.net/images/200623/temp/2aqsiuux.jpg...
Forum: support.Hardware 22 June 2020, 15:48
Replies: 50
Views: 2,556
Posted By DigitalKeeper
Lightbulb Please check all Traces & VIAs in marked Area's! ...

Please check all Traces & VIAs in marked Area's!

Often there are Problem's - renew Solder Blob's!

On Top of the PCB the VIAs (Vertical Interconnect Access) looks like they are ok; on Bottom...
Forum: MarketPlace 18 June 2020, 22:53
Replies: 7
Views: 1,012
Posted By DigitalKeeper
Thumbs up A1200.net - i've seen this, but - there are...

A1200.net - i've seen this, but - there are problem's :rolleyes

CDTV for 200 Bux? NEVER! ;)

Waiting for a KB or ?!?

I think - this - is one Option:
...
Forum: support.Hardware 18 June 2020, 13:25
Replies: 7
Views: 429
Posted By DigitalKeeper
Thumbs up Nice work! :guru :D And it's the right &...

Nice work! :guru :D

And it's the right & first way to do - check all Socket's for contact Problem's and then, check if the CPU are stuck at _HLT and/or _RST Line - check Traces :)

In most cases...
Forum: support.Hardware 15 June 2020, 16:23
Replies: 64
Views: 4,660
Posted By DigitalKeeper
Lightbulb Have a look ath the "_RST" & "HLT" Line by the...

Have a look ath the "_RST" & "HLT" Line by the CPU

If _RST is "LOW" (0 Volt) -> there is a Problem with the Reset; in most cases the N555 (U14) is defective

If _HLT is "LOW" (0 Volt) -> there...
Forum: MarketPlace 15 June 2020, 00:10
Replies: 7
Views: 1,012
Posted By DigitalKeeper
Lightbulb WANTED - Amiga 500 Black Keycaps

Hi there around the World :)


I'm searching for Black Keycaps for Amiga 500 Keyboard...


If ya had some - PM please :bowdown
Forum: support.Hardware 15 June 2020, 00:01
Replies: 27
Views: 1,128
Posted By DigitalKeeper
Post Be aware with the Agnus Socket :) They are...

Be aware with the Agnus Socket :)

They are "fragile", coz of "Aging"

They would break easy....
Forum: support.Hardware 14 June 2020, 23:54
Replies: 24
Views: 942
Posted By DigitalKeeper
Post Use the "_RST" Line instead of the "KB_RESET"...

Use the "_RST" Line instead of the "KB_RESET" Line ;)
Forum: support.Hardware 14 June 2020, 00:20
Replies: 27
Views: 1,128
Posted By DigitalKeeper
Yes, that's right :) (at my PCB here) I've...

Yes, that's right :) (at my PCB here) I've changed Agnus with another one...
Forum: support.Hardware 13 June 2020, 23:20
Replies: 27
Views: 1,128
Posted By DigitalKeeper
The most "curious" effects aka glitches, stuck,...

The most "curious" effects aka glitches, stuck, guru, came from contact failure - i.e. IC Sockets, corroded contacts, corroded solder blob's, corroded traces.

Have a look at dark/black Points on...
Forum: support.Hardware 13 June 2020, 18:21
Replies: 27
Views: 1,128
Posted By DigitalKeeper
Have a look at the Agnus Socket, coz of contact...

Have a look at the Agnus Socket, coz of contact problem's -> glitches

also possible - check traces to Data Path ICs and Chip RAM ICs
Showing results 1 to 39 of 39

 
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