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ZX Spectrum and add-on temperaturesImre Jakli from Hungary sent me some interesting pictures which I think are worth to share. These are about temperatures he measured with a modern to…
I used the TRACO power switching regulator TSR1-2450 ... using the 1.4A power
supply (1.2A was fine ... and with the 1.4A power supply I got 13.3V.
ZX81 (RAM replaced with SRAM) ... 7805, it decreased the power consumption by 2 Watts.
Toasted +3Oops.. I shorted one of my +3 (being clumsy with multimeter, doh) when measuring PSU connector pins :D Any immediate guesses what exactly died on thi…
... anything* with *anything* on the power supply lines, actually means that you ... quite spectacular, with every electrolytic capacitor on board blowing up ( ... +3 with a different power supply. If it still doesn' ... , then it's the power supply that got killed, so ...Toasted +3Oops.. I shorted one of my +3 (being clumsy with multimeter, doh) when measuring PSU connector pins :D Any immediate guesses what exactly died on thi…
... *anything* with *anything* on the power supply lines, actually means that you ... quite spectacular, with every electrolytic capacitor on board blowing up (see ... across them if the 5v supply remained at 5 volts ... certainly can't produce enough power to do that by ...Toasted +3Oops.. I shorted one of my +3 (being clumsy with multimeter, doh) when measuring PSU connector pins :D Any immediate guesses what exactly died on thi…
... spectacular, with every electrolytic capacitor on board blowing up ... conductor somewhere between the power supply and the short circuit ... the +3's power supply. All the power supply voltages on a ... internal resistance of the power supply (transformer windings and ...Toasted +3Oops.. I shorted one of my +3 (being clumsy with multimeter, doh) when measuring PSU connector pins :D Any immediate guesses what exactly died on thi…
... them if the 5v supply remained at 5 volts ... can't produce enough power to do that by ... even know what kind of power supply Spiv was using. He ... , 12V from the same power supply that provides the 5V, ... "wavebreaker" is the decoupling capacitor near each IC, all of ...Toasted +3Oops.. I shorted one of my +3 (being clumsy with multimeter, doh) when measuring PSU connector pins :D Any immediate guesses what exactly died on thi…
... to zero potential. The power supply voltages of +5 and ... ability of the decoupling capacitor to supply enough current (remember ... the equivalent series resistance of the capacitor ... as measured at the power supply by shorting it to ...French Grey +2 MINTOver on [URL="http://www.ebay.co.uk/itm/111238566453"]ebay[/URL] and [URL="http://www.amibay.com/showthread.php?t=54758"]amibay[/URL]
So what are the differences between this and the UK version?
Is it just the power supply and calculator is spelt wrong?no color zx spectrum 48k (rubber) composite modI have a problem, I just got my 48k speccy and I am waiting for my keyboard mebrane to arrive, meanwhile I did the composite mod and on startup befor…
Ah - be careful - if the power socket is loose, that may be what blew the previous power supply....
At least it now looks like all you need is a new power socket - I may have some in stock, otherwise dataserve-retro.co.uk has some...Amstrad FD-1 Disc DrivesA quick question: With the Amstrad FD-1 external disc drives, I've seen DDI-1 interface cards mentioned. Are the DDI-1 interfaces just for the Amstr…
... [URL="http://www.zxshed.co.uk/sinclairfaq/index.php5?title=3 ... short the FD-1's power supply to the +3's ground ...Any other members in Canada?Hi all, I'm from Scotland, but been in Canada a while now, and looking to see if there are other members in the Great White North, maybe to trade wi…
... can also then search for "UK plug extension" on Amazon.Ca ... for some UK style plug outlets to plug ... , if your also using other UK equipment like a TV)...
I have a power supply I picked up locally that ...external drive +3I recently bought an external drive kit for my +3 [url]http://www.ebay.co.uk/itm/111267120287?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649[/ur…
... /> [URL="http://www.zxshed.co.uk/sinclairfaq/index.php5?title=External_floppy_drives_on_the_Spectrum_ ... 2B3"]http://www.zxshed.co.uk/sinclairfaq/index.php5?title=External_floppy_drives_on_the_Spectrum_ ... br />
I use the power supply of an old external USB ...+3 upgrades?Hi this is my first post on becoming a member of this forum and I'm hopeful and excited about some of the hardware I have found. Hi I found my old …
... you're still after a power supply for a grey +2, there ... ://www.ebay.co.uk/itm/Sinclair-ZX-spectrum-2-Power-Pack-Grey ...Another "untested" dead spectrum...Hi, I'm looking for some suggestions on a faulty Spectrum I have picked up. I'll need to wait until tomorrow before posting pics, but the screen is …
... ICs or failure of their power supply or both.
Check ... of a bad capacitor. Check none of the power supply lines are shorted ... to 0V. Power on and check all 3 supply ...Spectrum Not Responding to Keyboard InputHello, sorry if this thread is not in the correct place, This is my first post and I'm not sure where to post this type of thread. :lol: Anyway, I r…
... .) The replacement Power Supply is an official Sinclair model UK1400 power supply unit which ... NEC D780C (It has the capacitor modification and I cannot see ...Harlequin clone...PCB manufactured!Using Chris Smith's detailed schematics and project notes from the Harlequin... a Speccy fan in the United States by the name of Don (Superfo) has de…
... ="http://www.ebay.co.uk/itm/UK-mains-power-supply-adapter-for-9v-PC ...Harlequin clone...PCB manufactured!Using Chris Smith's detailed schematics and project notes from the Harlequin... a Speccy fan in the United States by the name of Don (Superfo) has de…
... ="http://www.ebay.co.uk/itm/UK-mains-power-supply-adapter-for-9v-PC ...my pc hardware problem needs helpYou might have heard of my PC problems by now, but I'm not a hardware person and I have no idea what the problem is. So perhaps someone here can help…
... sure it's either the power supply or the processor/motherboard.[/QUOTE ... ]
A new power supply is far easier to test ... me think in a faulty capacitor, either in the PSU or ... you spot any swollen, bloated capacitor in the motherboard?my pc hardware problem needs helpYou might have heard of my PC problems by now, but I'm not a hardware person and I have no idea what the problem is. So perhaps someone here can help…
... =Black Hole;765255]A new power supply is far easier to test ... me think in a faulty capacitor, either in the PSU or ... you spot any swollen, bloated capacitor in the motherboard?[/QUOTE]
supply if I wanted to test ...Video on single transistor composite video modification for 48K SpectrumsI made a video on the single transistor composite video mod, using an Issue two Spectrum although it applies to all issues. Much better than the sing…
... on the absence of a capacitor and/or 75 ohm resistor ... . The entire video circuit +5V supply is provided through a 15 ... resistor R64 with a 22uF capacitor C25 to provide some smoothing ... transistor mod uses this +5V power supply (the one originally provided to ...Video on single transistor composite video modification for 48K SpectrumsI made a video on the single transistor composite video mod, using an Issue two Spectrum although it applies to all issues. Much better than the sing…
... on the absence of a capacitor and/or 75 ohm resistor ... composite signal and the +5V power supply for both the modulator and ...The Cassette Comeback?[url="http://gizmodo.com/sony-crams-3-700-blu-rays-worth-of-storage-in-a-single-1571508568?utm_campaign=socialflow_gizmodo_facebook&utm_source=gizmod…
... I get the feeling the UK is more interesting and ahead ... , recapped PCB, optimised external power supply, regulated PCB PCB power supply... yada yada yada ...Spectrum 128 malfunctioning with DIVMMCI recently got myself a spectrum 128 (toastrack) and a DIVMMC card so I could load games from it. It all works fine until it has warmed up and then t…
... be faulty capacitors in the power supply or the Spectrum PCB. You ... . You can attach a new capacitor simply in parallel to +5v ...Fixing my old ZX Spectrum 48K issue 4AHi Guys, I trying to fix my old Spectrum 48K. Looks like my dad used a wrong power supply as the ULA had a bit missing and so did the 7805. So I rep…
... 4116 RAM ICs. Do not power on again until this has ... have access to a bench power supply or similar, using it to ... power the Spectrum and limiting the current to 700 - 750 ...Fixing my old ZX Spectrum 48K issue 4AHi Guys, I trying to fix my old Spectrum 48K. Looks like my dad used a wrong power supply as the ULA had a bit missing and so did the 7805. So I rep…
... 4116 RAM ICs. Do not power on again until this has ... have access to a bench power supply or similar, using it to ... power the Spectrum and limiting the current to 700 - 750 ...ZX Spectrum Clock Signal Restorer Circuit[SIZE=5][U][B]ZX Spectrum Clock Signal Restorer Circuit[/B][/U][/SIZE] The circuit below is an experimental circuit. It has only been "tested" using…
... 1 capacitor - thats it.
Maybe one more for the power supply (10uF ... 1.4V when using 3V supply voltage and should be near ... other components except a block capacitor for supply voltage.ZX Spectrum Clock Signal Restorer Circuit[SIZE=5][U][B]ZX Spectrum Clock Signal Restorer Circuit[/B][/U][/SIZE] The circuit below is an experimental circuit. It has only been "tested" using…
... 1 capacitor - thats it.
Maybe one more for the power supply (10uF ... 1.4V when using 3V supply voltage and should be near ... other components except a block capacitor for supply voltage.[/QUOTE]
Toastrack refurbishmentYesterday I opened a drawer in my old desk and discovered 2 complete toastrack 128s and a board only for the same. As I already have a fully working…
... reason why the Sinclair "9V" power supply ratings are spec'ed to ... fingers burnt with the original ZX81 power packs. When a 16k RAM ...Burned finger temp on rubber 48k heatsink normal?Ok so i opened it up because a few keys started to act up and i noticed that after burning my hand the heatsink was that hot i could actually smell t…
... inside of the power supply there is a fairly big capacitor that I ...Burned finger temp on rubber 48k heatsink normal?Ok so i opened it up because a few keys started to act up and i noticed that after burning my hand the heatsink was that hot i could actually smell t…
... inside of the power supply there is a fairly big capacitor that I ... measure the supply's ripple, as I did in the power supplies ...Modern day replacement powersupply for ZX 128kHi All Anyone got any links to a modern day replacement powersupply for ZX 128k. I don't mind lobbing off the end and installing my own barrel, just…
... power supply providing 9v with at least 2A will be sufficient to power ... .co.uk/itm/9V-2A-2000mA-AC-DC-Switching-Adaptor-Power-Supply-Charger ...
