Posts by Giants

Yep !

Thks a lot

Return To my TV (LCD), re-test with flash firmware tips : Don't work.

Hummm

Connect with the same cable of my LCD but directly on my Samsung monitor : Try again flash-firmware... always black screen

BUT, with the monitor I can read some information and I see : 3840x2160 @ 60Hz

O_o'

Start the indivision program on the scart ouput, select 800x600, use and save.

Ahhh : Now i can see a 800x600 pictire on my PC monitor.

Try : PowerOff (5mn) and start again

Seems working.

hum, Ok, Try (on live) deconnect this cable to my PC monitor and re-plug on My LCD TV (Panasonic)

Nop, always Black screen.

So on LCD TV, no matter the configuration it's not working. (not important, it's juste for testing)

No matter the hardware configuration (Tv, monitor, cableS), I have always a 'Unknown Mode' printed. (but no matter, seems working)

Try another resolution : Seems Working

let's try to 'Restore to default' --> Black screen

Start Indivision Programm, Enable Pre Pal Auto+Vsync -> Save & Apply

Bim --> Return of output Picture on Hdmi port

So, it's a loading configuration (and so apply), that was not correct for me.

Need to ENABLE the 'Pre Pal Auto+Vsync' to work.

Going to do some test but i thinks that was the problem.

Hum : In ajustements menu, Re : High (work) and Normal (Black Screen), LOL

>Is the software complaining about unsaved changes when you start it

Yep !

The Configuration is not saved to the device

I'v just tested all video mode under indivision program, all give me 'black screen'.

Try to use the menu 'flash firmware' under this program and

it' give a video signal on my TV (my TV say : 800x600), great HDMI quality signal.

Cold Reboot : Ok, Hdmi output work again

Reboot : Ok, always good on hdmi ouput.

BUT, start to lauch your software, no matter the resolution or configuration selected.

If I test or save, BIMMMM -> Return to black screen.

Last : Long poweroff (5 min) return to the issue, Black screen.

To to launch indivision and flash Fimware menu.

Already tested, point to point, all are well connected.

Check a lot of configuration, all don't work.

I have always : Test Mode : Unknown Mode

I think the card don't read the information of my Tv

->Re-Read monitor display data -> Give -> Could not read display information.

Hdmi link seemns don't working.

Going to test with another Tv and câble

->And

Tested on my Plasma TV with High quality cable give me exactly the same, black screen.

Output work on VGA port

But don't work on HDMI port

3 cables tested. (of different quality)

3 Tv and monitors tested (Samsung, Panasonic and, I don't know the brand side Mahen)

>please download the config tool and start playing around with pixel clocks and audio on/off (pure DVI or HDMI encoding). The monitor you're using might not like what it's getting on the input

Ok, i going to try this.

Thks a lot.

Tested with 3.1 Original Kickstart give me same issue.*

*it's logic because it's a Hardware 'tips' but, I need to check also.

For information, I created some supports for it : https://www.thingiverse.com/thing:5617324

Hi !

This machine it's on my home for information.

It's so a A1200 rev 1D4 with no modification/hack

Work good with Kickstart 3.2 custom installed.

Machine work good with or without floppy disk (without boot on kickstart and with, booting on floppy installed )

So... no problem on this board detected.

Mk3 installed with no problem.

Tested with 2 HDMI cables, 2 Television Port (that work good on other hardware), 2 PC monitors.

On all test : Black screen, no output.

Boot on rescue disk and re-flash the hardware with no problem and...nothing change, always black screen.

Check 3 voltages on regulator : Found 5V, 3.3V and 1.8V, correct value.

Test With (on my side) 2 PSU (and so, 4 in total with mahem tests)

Lauch configuration program to set and test configuration : No problem to lauch this software, no bug but... no change, always Black screen on hdmi output.

Humm....

Visual check of the hdmi connector 'pin' : All are in correct status.

Test the cable from MK3 to PCB_VGA_HDMI : All pin are checked well.

Well... last test : The VGA output with the SUB-D15 connector : WORK

I have a very good signal on my pc monitor and so see my workbench.

Conclusion on my side :

Hdmi output : Don't work (and don't know why)

Vga ouput : Work very good

Check Keyboard access (Left Shift and Left Control + Tild) : Work good

Yes and No
Yes because it's NOT a issue with Aca500+ for sure.

No because, I know it's Not an Aca500+ issue but I wanted to know what the value 20 corresponds to.

And your answer to activate the debud mode of the serial port was a good idea.

Now, I know exactly the right sequence (with serial) of ACA500+_booting and I know the bad sequence also.

Based on this logs, I think it's a line problem on the CPU.

>Red...
Yes, by repair experience, the color issue on amiga is often misleading.

I know it's not the kickstart himself, but as you said, probably a problem with a cut or damaged line.

It's because I would like to know exactly the value 20 corresponds, to conduct my research.

It's a Real Amiga500+ so with all chipset solder on it.
RTC and co.

Yes of course, there was leaked battery on it.
I have repaired more than 20 cut lines, always around DATA PATH & GARY

I already check all lines of :
- GARY
- DATA PATH CHIPSEST
- KICKSTART
- CIA (A) & (B)
- PAULA

Yesterday I started to check the lines at the CPU and so, Agnus.

The road is long
I already check with no error find Half line of Cpu.

I have ordered yesterday a re-Amiga500+

If I don't find issue on this Board, I would do the transplant.

de-brick mode ? What's that ? Button pressed on Aca500+ ?
I already test that, I have a red fluctuating screen.

All tests with (Diagrom, logica, AmigaTestKit) have been passed without Aca500+ connected ofcourse.

I just tested another card on this Board (A500+ Rev8 - 1Mb Chip + clock)

- Aca500+ (so don't working - Error 20)

- MKIII (don't working, strange color in screen)

- PiStorm for replace the CPU and so, nothing else connected. (don't working, black screen) (tested with Kickstart 1.3, 2.05 and 3.1)

All my Cards has been tested well on other Amiga ofcourse.

Aca500+ working

MKIII working

PiStorm working

They are, somewhere on this Rev8, a hardware problem, for sure.

Only* Aca500+ have a serial port who can help me with this problem.

Diagrom has it too but... doesn't give any problems...

>Since this is only happening on a single A500+ board (which probably had a leaked battery in it's previous life), I'd go to de-brick mode and run very simple monitor software first, see if the machine is really 100% usable: Test memory, see if chip ram is fully usable.

Yep, already done by testing all hardware in this PCB with

- Diagrom 1.2.1

- Logica-dialoga-200
- Amiga Test Kit by keirf.

All tests passed by success.

That's why I find it strange., if they are problem on this board (and I think they are a problem on it).

Why in 'normal mode' (Gaming, play demo), all working good... that's... strange isn't it ?
Ah, PiStorm don't work on this board (black screen)
It goes back to the fact that there is undoubtedly a hardware problem somewhere on this PCB.

But where...

C712 replaced : No change.

I don't already tested all line of CPU, I going to do this.

Normaly, after the lastcode bellow (00000020)
I should have This -->

Quote

00 00 FF 00000000 CPU

00000021

00000022

00000023

Boot

...

Display More

Hi !

Serial Port activated with another A500 as you said, and I have this.

Quote

!00000001

00 87 fcset

00000002

00000003

00000000 RAMCheck

00000005

00000000 Powerup/restart

00000006

00000007

00000010

00000011

00000012

00000013

00000014

00000015

00000016

00000017

000000FF 00000000 00000000 C0/F0/F8

0000001F

00000020

Display More

I have tested 3 powers supply without change.
And ofcourse, alim that have use with this 500+ have been tested well with another amiga.

>These occur if the electrolytic capacitor in the reset circuit of the A500 has dried out.

In this case, (wrong of not 'clean' reset_signal, I should have problems to boot with the amiga without the aca500 ? it's not the case.
I can take a look with osciloscope to the reset_signal and, in doubt, I can change too the capacitors.

C42, C711 and C713, I don't think so, but I can desolder and mesure them.
C712... maybe.... To check.

I already test the 'keyboard reset', don't change this problem.
Amiga reboot, and I can see finaly '20' on the digit.

Hi !

Recently I order to a friend an ACA500Plus

It work good on 2 of my Amiga500, no error. (great product)

But, on another amiga, Amiga500 PCB REV8 (so Amiga500Plus with 1Mega chip ram)

Don't working

I have, in order to my screen on amiga boot :

- Black screen

- Blue Screen

- Purple Screen

- return to BLUE screen

- and finaly, stuck to Black screen

Print 20 on 'LED DIGIT' (and led Green bright)

And exactly, on boot, on this Led digit ==> (turn digit) --> 0 --> 5 --> 6 --> 20

This Amiga500+ passed with succes All diagrom Test (and logical rom)

I have 2.05 kickstart ont it, it seams working good on all tested games and demos

But... maybe it has an H/W issue ?

Can you tell me the signification of the number printed on the 'mini led panel' of aca500 ?

So 0, 5, 6 and 20

I have alread repair this amiga (20 wraps) around DATA PATH
Tested all lines of CIA(A & B), PAULA, GARY and ROM

But... maybe there is still something wrong.

Knowing what the numbers displayed correspond to would help me.

Thks a lot