Tailsnic Retroworks
Grand Master
Hi. Does anyone know how to repair this issue? What do I have to check?
Last edited:
[SOLVED] Wardner no Mori FRAM error
- Thread starter Tailsnic Retroworks
- Start date
Hi. Does anyone know how to repair this issue? What do I have to check?
Tailsnic Retroworks
Grand Master
I have forced error on other rams, and I obtain LRAM ERROR joining input signals in these rams:
So almost for sure, FRAM ERROR must be these ones:
So almost for sure, FRAM ERROR must be these ones:
Ape Cosplay
Professional
You are correct.
From my notes:
- FRAM @B8 & B10
- Text RAM @J7 & J9
- CRAM @K3
- Back 0-1 @J14 & J15
- Back 1-1 @J18 & J20
- LRAM @L24 & L26
- Work RAM @P8 & P10
RAMs in the sprite circuitry aren't tested.
From my notes:
- FRAM @B8 & B10
- Text RAM @J7 & J9
- CRAM @K3
- Back 0-1 @J14 & J15
- Back 1-1 @J18 & J20
- LRAM @L24 & L26
- Work RAM @P8 & P10
RAMs in the sprite circuitry aren't tested.
Tailsnic Retroworks
Grand Master
Desoldered FRAMs and the 2x74LS245, all are good. Also the rams are being activated, so the error must be something deeper.
What are "WT1" and "WT2" components?
@caius provided info for the WT2 here:Desoldered FRAMs and the 2x74LS245, all are good. Also the rams are being activated, so the error must be something deeper.
What are "WT1" and "WT2" components?
https://jammarcade.net/truxton-repair-log-3/
Tailsnic Retroworks
Grand Master
So I could try to exchange WT2 of FRAM zone for another WT2 and see what happens, right?
Tonitoxarcade
Enthusiast
Hi Juande, check that the Fujitsu LS08 is not involved in the RAM circuit.
BTW
I have a Wardner that runs through the test procedure at boot up, but when the title screen is supposed to load, the screen just end up black.
See video here:
View: https://youtu.be/bUqohVKYCTk
I wonder if it's related to the errors above but it can't be displayed for some reason?
I have a Wardner that runs through the test procedure at boot up, but when the title screen is supposed to load, the screen just end up black.
See video here:
I wonder if it's related to the errors above but it can't be displayed for some reason?
Tailsnic Retroworks
Grand Master
Solved, many thanks for the tips. After a few more time inspecting, I have discovered a self destructed trace hidden below a leg. This discovering is due to a extrange state in one of the LS157 in charge of A signal in the FRAMs. One of the LS157 input values seemed bad, so after using the multimeter I have discovered a trace with no continuity
One bent leg of the W.T.C02 was hidding this damage.
Now it's fully alive.
One bent leg of the W.T.C02 was hidding this damage.
Now it's fully alive.
Ape Cosplay
Professional
Does it play blind or really just stuck on a black screen?
I imagine if text RAM was bad it could prevent the error message to show.
yes that was my thought as well.
It just halts, it won’t accept credits .
I will look at the corresponding RAMs in your list
It just halts, it won’t accept credits .
I will look at the corresponding RAMs in your list
When the tests are running, are these run in sequence according to your list?
Like, FRAM first, Text aftewards and etc.