Search found 2481 matches

by Dave
Sat Feb 29, 2020 3:04 pm
Forum: Hardware
Topic: MDV2 Microdrive spinning slowly all the time.
Replies: 16
Views: 1617

Re: MDV2 Microdrive spinning slowly all the time.

If you physically examine the wires, you might find they're in rough shape.

Buying some turned pin socket strips, and reshaping and soldering these wires into the socket strips, to get a nice, secure connection, might help.
by Dave
Fri Feb 28, 2020 4:14 pm
Forum: Hardware
Topic: MDV re-felting
Replies: 5
Views: 707

Re: MDV re-felting

Would this be what you were talking about? https://www.ebay.com/itm/Replacement-Felt-Pressure-Pads-for-8-Track-Tape-Cartridge-Repair-Fix-16-Tapes/183943359893 That would work. Cut it to fit the full size of the metal pad - not the tension arms part. The main thing about it is it is anti-static trea...
by Dave
Fri Feb 28, 2020 4:10 pm
Forum: Hardware
Topic: Re-felting Microdrive Carts
Replies: 11
Views: 1615

Re: Re-felting Microdrive Carts

When a microdrive is dead, always keep the spring. I have three spares.
by Dave
Thu Feb 27, 2020 9:52 pm
Forum: Hardware
Topic: Re-felting Microdrive Carts
Replies: 11
Views: 1615

Re: Re-felting Microdrive Carts

The metal springs are easily removed with tweezers, and replaced. I can do it 100% never breaking any.
by Dave
Thu Feb 27, 2020 9:51 pm
Forum: Hardware
Topic: MDV re-felting
Replies: 5
Views: 707

Re: MDV re-felting

I did a lot of research into this many years ago. The only hard and fast rules are that the surface needs to be non-abrasive, and it can't be a plastic or static-generating material. Scotch tape, when rubbed by a fast moving plastic strip, creates a static charge which induces crackles into the reco...
by Dave
Mon Feb 17, 2020 9:17 am
Forum: Hardware
Topic: PCI Express video
Replies: 15
Views: 1419

Re: PCI Express video

GAME OVER Would you like to play a different game? Ok, I know that was harsh, but as someone who has spent seven years trying to develop a video card, and not yet matching Nasta's Aurora, I think that I am not definitely qualified to answer this, but I know who is. If Nasta says you're smoking crack...
by Dave
Thu Feb 13, 2020 7:06 pm
Forum: The Off-Topic Section
Topic: Today I Received...
Replies: 271
Views: 27825

Re: Today I Received...

Today I received:

1000x 5117400 4mx4 DRAMs (two make 4MBytes)...
by Dave
Sun Feb 02, 2020 10:55 pm
Forum: Hardware
Topic: Stock Power Supply Load
Replies: 5
Views: 614

Re: Stock Power Supply Load

The memory switches with the CPU's cycles, and with the 8301's video scan and refresh function. All of that DRAM switching in unison creates a huge buzzsaw of power demand. This causes ground bounce - which is that the relative value of 5V and ground shifts. This introduces subtle noise into video, ...
by Dave
Sun Feb 02, 2020 10:39 pm
Forum: Hardware
Topic: Original QL case molds
Replies: 8
Views: 635

Re: Original QL case molds

If you cut the case .5mm inside the MDV hump, then just print a new end cap with the hump end styling but smaller, with two SD slots in it... Well...

You'd be all set.
by Dave
Sun Feb 02, 2020 10:09 pm
Forum: The Off-Topic Section
Topic: Today I Received...
Replies: 271
Views: 27825

Re: Today I Received...

This is a design decision, and the only real area of concern is that the input 5V is passed directly to the keyboard and mouse. The internal 3v3 regulators can handle a bit more, but not dramatically so. The problem arises when you have multiple power jacks, all aline, on the table, and you have to ...