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Missing Voltage RegulatorHello all and a very merry 2-days-after-the-speccys-25th-birthday to you all! Okay, I've just received my brand spanking new 48K keyboard membranes …
... /+12v is generated from a power supply circuit which is not fed ... in your area don't supply something suitable. You can use ... -
TIPP31 transistor questionYesterday I had the time to try and repair a 4S issue 48k spectrum I had. First of all I replaced all the electrolytic capacitors. The tr4 transistor…
... the current draw on the power supply is compared to a non ... draw from the Spectrum's power brick from a normal machine ... -
TIPP31 transistor questionYesterday I had the time to try and repair a 4S issue 48k spectrum I had. First of all I replaced all the electrolytic capacitors. The tr4 transistor…
... stuff that draws on that power supply are the 4116 memory (the ... The ROM is a single supply 5v chip that runs entirely ... digital parts are single 5v supply off the 7805 too. ... the Speccy's switch mode power supply - it's probably quick ... but powered by the supply. -
48K Speccy not workingHey, A few months ago (hope it´s not to late) I was loading a game into my speccy and from one moment to another it stopped working! I unplugge…
... the first, check if your power supply works. Use a multimeter to ... on the screen when you power up your Speccy, than it ... disassembled PSU to the AC power and measure voltage on a ... -
48K Speccy not workingHey, A few months ago (hope it´s not to late) I was loading a game into my speccy and from one moment to another it stopped working! I unplugge…
... the first, check if your power supply works. Use a multimeter to ... on the screen when you power up your Speccy, than it ... disassembled PSU to the AC power and measure voltage on a ... a PSU. There's enough power there to KILL YOU, let ... -
48K Speccy not workingHey, A few months ago (hope it´s not to late) I was loading a game into my speccy and from one moment to another it stopped working! I unplugge…
... internal power supply is working correctly.
To verify the power supply to ... -
Problems with TS2068sI bought 2 TS2068s, and this is what's happening: 1st computer: -The tv output doesn't work. The composite video output does* -The '7' key is dead.…
If the Timex uses 4116 RAM, it probably has a little switch mode power supply to generate the -5v/+12v supply to the memory. It's probably the coil making that noise. The Speccy does that too. -
48K Speccy not workingHey, A few months ago (hope it´s not to late) I was loading a game into my speccy and from one moment to another it stopped working! I unplugge…
... stage is the on board power supply which makes the -5v ... killed if the -5v supply is removed when the + ... 5v supply is still present - if ... or shorted the on-board supply, it may have caused ... whether the onboard supply is working correctly. -
48K Speccy not workingHey, A few months ago (hope it´s not to late) I was loading a game into my speccy and from one moment to another it stopped working! I unplugge…
... was devastating.
ULA, Z80, power supply transistors, lower RAM and tr8 ... -
ULA chipHi. Where i can find a ULA 6C001E-6 chip for an 3B issue Speccy ? Also looking for one 7805 heatsink... Thank
... other bits, he sells the power supply units thought and at a ... -
Problems with TS2068sI bought 2 TS2068s, and this is what's happening: 1st computer: -The tv output doesn't work. The composite video output does* -The '7' key is dead.…
... has a little switch mode power supply to generate the -5v/+12v ... supply to the memory. It's ... -
divIDE & SD Cards?Can someone tell me if the divIDE interface can read SD cards or if support for them will be added in the future? My entire game collection is backed…
... /> "Do I need an external power supply?
We have heard that ... Compact Flash cards needed external power when plugged into the IDE ... memory card which requires external power on the DivIDE Plus. If ... , this will need a PC power supply as the one supplied with ... -
The I/O interface Simon's selling[url]http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=120122353332&fromMakeTrack=true&ssPageName=VIP:watchlink:middle:uk[/url] Is this the kind …
... clamps, is for an external power supply that the switching transistors are ... -
What is the term......for a device which monitors a set of computers (via ping or whatever) and, if a computer is unresponsive, power cycles that computer (effectively …
... need to sit between the power supply source and the machines it ... a network connection and can power off/on those machines at ... -
Why the name "8-bit computer"?The Spectrum was called an 8-bit computer, but what does that mean? For modern hardware and operating systems (32 or 64-bit) it seems to be the poss…
... keyboard, the main PCB, the power supply, Z80 processor, 16K RAM and ... -
What is the term......for a device which monitors a set of computers (via ping or whatever) and, if a computer is unresponsive, power cycles that computer (effectively …
... , they provide battery backed power to the connected machines and ... ) when there is a power outage allowing the machines to ... generator should be monitoring the power supply seperately and kick in automatically ... to cover the time from power out to generator kick ... -
Why the name "8-bit computer"?The Spectrum was called an 8-bit computer, but what does that mean? For modern hardware and operating systems (32 or 64-bit) it seems to be the poss…
... keyboard, the main PCB, the power supply, Z80 processor, 16K RAM and ... -
Free Acorn and Amiga gear - Cambridge UKHiya - not really speccy related - but you can emulate the speccy on em! Hehe The time has come, I am in Oz, my folks in the UK and they are tired o…
...
Commodore A1200 Amiga (+ power supply).
Its all got ... -
Unconventional way of diagnosing a faultHi everyone Some time ago I got a 48k Spectrum (issue 3B board) in a pretty bad condition. I believe the power supply transistor TR4 failed, causing…
... line on the screen after power-on. I can't check ... were also damaged when the power supply blew since everyone is saying ... -
128 spectrum zx +2 is stuck on test screenhey this is my first spectrum i bought it from a boot-sale for 2 pound and it came with loads of games but when i turn it on i get the test screen an…
... a grey colour. When you power it up, dows the menu ... grey +2. Alternatively, does the power supply lead have a half inch ... -
20 tons([url]http://www.worldofspectrum.org/infoseekid.cgi?id=0000024[/url]) has anyone played this true gem? do you believe all levels are possible to fini…
You know, we should have a poll of 20 tons vs. Chuckie Egg. As in, if you were stranded on an island with a speccy/telly, power supply wouldn't be a problem, but you could only have one out of those two games ... ;-) -
My SurplusHere's a list of stuff that I plan to sell. Please let me know if you're interested in any of the items listed below. If you need pictures or more de…
... simple as using a UK power supply and converting it to composite ... -
My SurplusHere's a list of stuff that I plan to sell. Please let me know if you're interested in any of the items listed below. If you need pictures or more de…
... simple as using a UK power supply and converting it to composite ... />
Simon,
UK power supply at 9v, 1A (a ZX80 ... -
UlaI remplaced an ULA 6c001-6 by an ULA 6c001-7 chip on issue 3B board. It is "crucial" to remove R32 and adding the 2x NAND gates ??? or not ? Thanks.
... didn't come with the power supply. :) -
UlaI remplaced an ULA 6c001-6 by an ULA 6c001-7 chip on issue 3B board. It is "crucial" to remove R32 and adding the 2x NAND gates ??? or not ? Thanks.
... didn't come with the power supply. :)[/QUOTE]
Very interressed ... -
Computer crashes on boot problemHelp, I need help !! My Computer crashes randomly, sometimes just after start-up sometimes it will last for ages. I then get the Blue screen with…
What watt (wot?) is your power supply and how old is it?
Sounds as if you might need a new one. Possibly.
Have you only had this problem after a storm? -
Interface 1 electrolytic capacitorsInterface 1 has three 47μF electrolytic capacitors. Is it necesary to replace them with fresh ones? I always do this with old speccys but is it…
... or eliminate ripple from power rails. The consequences of ... a microdrive causes enough power supply ripple to cause anything ... Leakage: Awful
Comments: Power supply filters; polarized; short life
power smoothing circuits, or possibly ... -
ZX Spectrum 128+ problemsHello!I recently purchased and got myself a spectrum 128+ from ebay.The item did not have an original power supply so i got a power supply of 9volts …
... BASIC.
Connecting the power even for a fraction of ... use diode protection of the power supply. This is especially important when ... -
ZX Spectrum 128+ problemsHello!I recently purchased and got myself a spectrum 128+ from ebay.The item did not have an original power supply so i got a power supply of 9volts …
Spectrum power supplies aren't stabilised (regulated). An unloaded Speccy power supply will put out something like 12 volts (the supply is labelled 9v). The 7805 in the machine does all the regulation. -
ZX Spectrum 128+ problemsHello!I recently purchased and got myself a spectrum 128+ from ebay.The item did not have an original power supply so i got a power supply of 9volts …
... .Those 15 minutes that the power supply worked the heatsink was getting ... .I will get a new power supply tomorrow and test.
Thank ...
