Does it happen also when you do a reset? or only with powering up the QL?
Piggyback 4164 to Diagnose Memory Fault
Re: Piggyback 4164 to Diagnose Memory Fault
Re: Piggyback 4164 to Diagnose Memory Fault
That is important. Now someone with a QL in good working conditions for both MDVs can tell you if that is the normal behavior or something is wrong.
For what you say (My MDVs didn't work so cannot ensure you), I understand that is OK. Like in a PC booting up, the check from BIOS that Floppy, keyboard, hardisks, etc were present or not.
Re: Piggyback 4164 to Diagnose Memory Fault
It’s definitely not normalPopopo wrote: ↑Sat Jan 20, 2024 1:24 pmThat is important. Now someone with a QL in good working conditions for both MDVs can tell you if that is the normal behavior or something is wrong.
For what you say (My MDVs didn't work so cannot ensure you), I understand that is OK. Like in a PC booting up, the check from BIOS that Floppy, keyboard, hardisks, etc were present or not.
On my good QL the only time an mdv spins at start is after pressing F1/F2 and no floppy attached
And only mdv1 spins, not mdv2
Re: Piggyback 4164 to Diagnose Memory Fault
Stop me at any time if I mix too much both subjects (this thread and the issue with spinning motors from MDVs).
Do you use any kind of mapping drivers? That could map MDV2 as MDV1?
Happen it too with MDV1?
At any case... that is a pretty simple test if you have 2 QLs...
Take the MDV2 from the QL that works completely right... and try to check it on the QL that you have the issue.
And.... the most important thing... Are both QL the same version?
Cause perhaps one ULA version force to spin MDV2 at booting time while the second version doesn't.
Just giving you options because I am not expert in QL Scene.
Re: Piggyback 4164 to Diagnose Memory Fault
I don’t want to touch the good QL but will probably try switching drives around in the poorly QL if the ribbon cables look like they’ll survive it
Thanks
Thanks
Re: Piggyback 4164 to Diagnose Memory Fault
Well the MDV2 problem is something I've had to put to one side for now
When swapping the MDV's around I knackered the ribbon cable ends on what was MDV1 (managed to get it connected temporarily as MDV2 which seemed to show the "running mdv2 at power on" problem stayed with the position rather than moved with the MDV, so motherboard related I guess)
For now, until I see whether the QL can be bought to life again, I've left the MDV out of the QL. If it comes to life I'll re-strip and re-tin the ribbon cables on the MDV I've removed
When swapping the MDV's around I knackered the ribbon cable ends on what was MDV1 (managed to get it connected temporarily as MDV2 which seemed to show the "running mdv2 at power on" problem stayed with the position rather than moved with the MDV, so motherboard related I guess)
For now, until I see whether the QL can be bought to life again, I've left the MDV out of the QL. If it comes to life I'll re-strip and re-tin the ribbon cables on the MDV I've removed
Re: Piggyback 4164 to Diagnose Memory Fault
Tried to re-tin the ribbon cable, no luck as I can't get it thin enough and some buckle on insertion (my soldering skills and eye's aren't up to the job - got an eye appointment in a weeks time!)
I thought maybe I could solder a straight 2.54mm pitch header onto the end of each ribbon, but when I checked the header fit to the mobo I found the pins are too wide to push into the socket on the mobo (the pitch is fine, it's the pins themselves that are too large)
I was wondering if anyone knew of a source of a header with pins thin enough to fit in the mobo socket please?
Many thanks
I thought maybe I could solder a straight 2.54mm pitch header onto the end of each ribbon, but when I checked the header fit to the mobo I found the pins are too wide to push into the socket on the mobo (the pitch is fine, it's the pins themselves that are too large)
I was wondering if anyone knew of a source of a header with pins thin enough to fit in the mobo socket please?
Many thanks
Re: Piggyback 4164 to Diagnose Memory Fault
Looks like it’s SIL connectors I need, so have ordered some samples
Re: Piggyback 4164 to Diagnose Memory Fault
Hi
Get the ones that are turned, they have thinner pins. If you have solder paste put some in each before you insert the cable.
Get the ones that are turned, they have thinner pins. If you have solder paste put some in each before you insert the cable.