Search found 608 matches

by Martin_Head
Mon Feb 22, 2021 3:06 pm
Forum: Hardware
Topic: ql printer repair woes
Replies: 39
Views: 3938

Re: ql printer repair woes

Bit of a long shot, (well a lot more than a bit) Try re-soldering the connections on the back of the printhead, in case there is some kind of dry joints after all the years.
by Martin_Head
Sat Feb 20, 2021 3:59 pm
Forum: Hardware
Topic: ql printer repair woes
Replies: 39
Views: 3938

Re: ql printer repair woes

Looks like the coils have burnt out. Probably driver transistors blown up. You will likely find a row of 9 transistors, or there may be a couple of '4 pack' transistors, and an odd one. The '4 pack' option sounds like a good bet, as there are 4 blown coils. A bit academic unless you can get a replac...
by Martin_Head
Sat Feb 20, 2021 11:41 am
Forum: Hardware
Topic: ql printer repair woes
Replies: 39
Views: 3938

Re: ql printer repair woes

If you can get at the other end of the ribbon cable. You could measure the resistance of the coils in the printhead to see if they are OK. I would expect the thick middle one to be the common. Also I don't know how well the flexible cable has faired over the years, look for any cracks. Think QL keyb...
by Martin_Head
Sat Feb 20, 2021 11:28 am
Forum: General QL Chat
Topic: Inkjet ink
Replies: 33
Views: 3487

Re: Inkjet ink

XorA wrote:I know it doesn’t help, but try a leaking laser toner cartridge. Bugger me that stuff gets everywhere and doesn’t clean off.

And be careful about using a vacuum cleaner with it. The toner can get through the filters and gum up the motor. We used to have special vacuum cleaners at work for toner.
by Martin_Head
Fri Feb 19, 2021 11:21 am
Forum: General QL Chat
Topic: Inkjet ink
Replies: 33
Views: 3487

Re: Inkjet ink

2. Why do printers report a cartridge as empty when there's so much ink left in them, seems extremely wasteful. The lake on my desk was several inches wide, must have been a good 5 to 10ml at least going to waste. Often what the printer does, is that it knows how much ink is used in every 'squirt',...
by Martin_Head
Wed Feb 17, 2021 11:05 am
Forum: QL Emulation
Topic: QPC2 v5 released
Replies: 58
Views: 6112

Re: QPC2 v5 released

That it is, but I couldn't find what I was looking for in this instance: is there any (easy) way of making QPC2 recognise .MDV files without trying to trick it into thinking it's something else? QPC can do a lot of things, but MDV images are a pure retro thing and that is not the usage scenario QPC...
by Martin_Head
Sat Feb 13, 2021 10:24 am
Forum: Software & Programming
Topic: Q68 QoE Ethernet Driver
Replies: 61
Views: 6308

Re: Q68 QoE Ethernet Driver

Here is Version 0.25 of the driver. I have been trying to fix the random bad packet problems, And yesterday I threw my test programs at it, and saw no problems. So I thought I would post it. I noticed that the ETH_PING command hangs the machine (it worked with 0.22). Also ETH_INIT breaks the ethern...
by Martin_Head
Wed Feb 10, 2021 10:08 am
Forum: Hardware
Topic: Backplane issue, or have I missed something?
Replies: 18
Views: 1329

Re: Backplane issue, or have I missed something?

Just a thought, Is your 9v supply OK. If it's has a lot of ripple, then the combined load of the two cards could cause the bottom of the ripples to drop too low for the 5v regulators to handle.

The smoothing capacitors on the output line could be drying out with age.
by Martin_Head
Mon Feb 08, 2021 10:28 am
Forum: Software & Programming
Topic: Q68 QoE Ethernet Driver
Replies: 61
Views: 6308

Re: Q68 QoE Ethernet Driver

janbredenbeek wrote:I was able to successfully run QBOX as Telnet server on the Q68. Couldn't get QLTerm to work as Telnet client though,


Hi Jan, Did you try to investigate why QLTerm would not work? Is it a missing feature, or bug I need to find.
by Martin_Head
Mon Feb 08, 2021 10:22 am
Forum: Software & Programming
Topic: Q68 QoE Ethernet Driver
Replies: 61
Views: 6308

Re: Q68 QoE Ethernet Driver

Here is Version 0.25 of the driver. I have been trying to fix the random bad packet problems, And yesterday I threw my test programs at it, and saw no problems. So I thought I would post it. Tried it again this morning just before posting, and I got the odd bad packet, with the same test programs I ...