Ahem, fuses are for that. Those old caps due to their "paper" conception ALWAYS blow and catch fire after a decade, not because they are used as fuses.
Search found 685 matches
- Tue Jun 07, 2022 10:49 pm
- Forum: Hardware
- Topic: MZ-700 correct filter capacitors for PSU
- Replies: 14
- Views: 7198
- Mon Jun 06, 2022 3:26 pm
- Forum: Hardware
- Topic: Help: Sharp MZ 700 short fuse with video connection
- Replies: 13
- Views: 5984
Re: Help: Sharp MZ 700 short fuse with video connection
MZ-700 is only using 5V from the PSU and it seems you checked it. RF-box is only powered with 5V as far as I know. So the issue is about the current intensity (well that's the function of a fuse). I would say if you have a multimeter, put it in intensity mode with the highest max value and check wha...
- Sun Jun 05, 2022 4:46 pm
- Forum: Hardware
- Topic: Help: Sharp MZ 700 short fuse with video connection
- Replies: 13
- Views: 5984
Re: Help: Sharp MZ 700 short fuse with video connection
For my experimental MZ-700 I used an Amiga SCART cable. Dupont wires to connect the inner RGB connector to DB23 (yes I know we should add resistors to decrease the TTL voltages). Color are too vivid but at last you can test as well.
- Sun Jun 05, 2022 4:24 pm
- Forum: Hardware
- Topic: Help: Sharp MZ 700 short fuse with video connection
- Replies: 13
- Views: 5984
Re: Help: Sharp MZ 700 short fuse with video connection
Here is what I got on a MZ-800 in monochrome monitor video output:
- Sun Jun 05, 2022 4:20 pm
- Forum: Hardware
- Topic: Help: Sharp MZ 700 short fuse with video connection
- Replies: 13
- Views: 5984
Re: Help: Sharp MZ 700 short fuse with video connection
https://www.sharpmz.no/articles/the-mz-series/mz-700/mz-700-connecting-a-monitor-or-a-tv-to-the-mz-700/ It seems you plug the right connector so far. I guess your cinch cable it is an RCA cable (yellow one, I already used them to connect a TV). If you have an oscilloscope, you should probably check ...
- Sun Jun 05, 2022 2:16 pm
- Forum: Hardware
- Topic: Help: Sharp MZ 700 short fuse with video connection
- Replies: 13
- Views: 5984
Re: Help: Sharp MZ 700 short fuse with video connection
Did you invert the connection? I mean connector A was on MZ-700, B on screen. What would happen if B on MZ-700, A on screen? I'm not asking to do so but if you happened to check that also. As a matter, for some reason, using that cable provokes a surge. Did you check the voltage of you cinch cable? ...
- Sun Jun 05, 2022 1:36 pm
- Forum: Hardware
- Topic: Help: Sharp MZ 700 short fuse with video connection
- Replies: 13
- Views: 5984
Re: Help: Sharp MZ 700 short fuse with video connection
Which country? 110V? 220V? Western or Japanese MZ-700? And so on. First, does it happen only when connected to a screen? Does it run without cinch cable? Does it run with cinch cable connected? Because you may have a short-circuit when connecting a cinch cable to MZ-700. Please open the case of MZ-7...
- Wed Jun 01, 2022 11:37 pm
- Forum: Hardware
- Topic: MZ80B - BootRom Disc
- Replies: 12
- Views: 8124
Re: MZ80B - BootRom Disc
This is a GAL, not a CPLD.
- Mon May 30, 2022 8:09 pm
- Forum: Hardware
- Topic: MZ-80a US Power Supply
- Replies: 4
- Views: 2684
Re: MZ-80a US Power Supply
Better, one being able to accept 100-240V to deliver 5V/4A
This one is around 5A:
https://asset.conrad.com/media10/add/16 ... -5-vdc.pdf
This one is around 5A:
https://asset.conrad.com/media10/add/16 ... -5-vdc.pdf
- Wed May 18, 2022 12:55 pm
- Forum: Hardware
- Topic: Are there factory bodges on MZ-80K PCB?
- Replies: 7
- Views: 3668
Re: Are there factory bodges on MZ-80K PCB?
My assumption is the clock of LS165 was modified to output at 40 or 80 columns so there was probably a more complex circuit due to addition of VRAM from 1KB to 2KB. I don't know the mod though.