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Issue 2 Spectrum overheating keyboard membraneI think I have an issue 2 ZX Spectrum. I don't want to take it apart again as I had problems replacing the keyboard membrane. With Interface 1 conne…
... and thus bypass the internal regulator entirely. Has anyone tried ... +/-12volt and -5volt switching regulator circuit around TR4/5 (not ... issues). Replacing the 7805 regulator with a more modern switching ... the input to the 7805 regulator through a (suitably rated) ... -
Issue 2 Spectrum overheating keyboard membraneI think I have an issue 2 ZX Spectrum. I don't want to take it apart again as I had problems replacing the keyboard membrane. With Interface 1 conne…
... the input to the 7805 regulator through a (suitably rated) rectifier ... drop that the hard-pressed regulator needs to handle.[/QUOTE]
regulator since they are typically around ... -
issue 2 board c34 getting hotHi All, Can anyone help with c34 getting hot very quickly? I`ve got an issue 2 board, there is no `buzz` from coil. yet the spectrum initalises to co…
... might try exchanging the 7805 regulator, just to close that door ... -
issue 2 board c34 getting hotHi All, Can anyone help with c34 getting hot very quickly? I`ve got an issue 2 board, there is no `buzz` from coil. yet the spectrum initalises to co…
... , as I have replaced the regulator that was completely dead with ... a 2805 regulator, perhaps that is what is ... -
Using a Spectrum in JapanHi all, at the moment I have a 48k Spectrum on its way (with a LOT of other stuff) to Japan where I intend to use it. So I have some fairly straight…
... , and what the internal Spectrum regulator gives for output (you could ... drawn (that's what a regulator does). But for a 48K ... -
Using a Spectrum in JapanHi all, at the moment I have a 48k Spectrum on its way (with a LOT of other stuff) to Japan where I intend to use it. So I have some fairly straight…
... as it supplied a standard regulator, a 14v supply would be ... -
128K +2 (Grey) no image output.Got an 128K +2 Grey that works in every aspect except no image (neither from RF or RGB), swaped the RF from my 48K+ witch was working well and tested…
... fault could be the 7805 regulator failing (on that big *oversized ... -
The DiscipleI've recently got a few issues of SU (11 for $10! in the USA) and found a few ads for the Disciple. Never saw this peripheral at the time...sound int…
... get very hot, as the Regulator was not screwed to a ... -
Using a Spectrum in JapanHi all, at the moment I have a 48k Spectrum on its way (with a LOT of other stuff) to Japan where I intend to use it. So I have some fairly straight…
... , if you are low the regulator will burn up and fry ... -
What we gotI moved house and I have setup my Spectrum gear, I was looking at all that I have and was thinking what else do others have in there collection? Ok …
... to its onboard switch mode regulator)
1 +3 (issue 1 ... -
issue 4s for reapirHi All, This time I have issue 4s for repair :) Here is few screen shots and small movie after boot. [url]http://forest.no-ip.org/issue4s/[/url] I kn…
... transistor (larger than the 7805 regulator) in the place of the ... -
50p on your phone billThe UK government [I]really[/I] know how to put the 'S' into Stealth Tax: [URL="http://news.bbc.co.uk/1/hi/technology/8102756.stm"]http://news.bbc.c…
... has to go to the regulator everytime they want to up ... -
not much gear and absolutley no ideaIm looking for some help with two spectrums that i have just dug out of storage and are both unfortunatley faulty. I had always regreted that during …
... is supplied by the voltage regulator) then the lower memory dies ... -
divide plus back to life , preorderI have green light form authors to made DIVIDE PLUS, anybody interested? Promise from me , fully asembled and tested DIVIDE PLUS in plastic case. Qua…
... of the buffer and voltage regulator. I made the first couple ... -
48k + Power supplyHi, Anyone know where I can get a replacement PSU for the 48k Plus? Nothing on Ebay at the minute. Looks like the end is Imminent for my one! Tha…
... onto the +5 (where the regulator would of been.) surely this ... -
Broken ZX Spectrum? :(Hi! I bought a 2nd hand ZX Spectrum half a year ago. It worked perfectly fine when I first tried it. I put it back in its box which it was sent in, …
... ... no explosion in the voltage regulator or similar.
TR4 ... -
ZX Spectrum not working - Please help.Hi there, I am new to this forum and was pointed in this direction by a fellow Youtuber after uploading the following video and then explaining that…
... , suspect a failure in the regulator 7805 or some other section ... -
Should I or shouldn't I donate?A guy comes to the door from the Red Cross. He puts across a very convicing argument about the good work they do then asks if I am prepared to donate…
... a representative on from their "regulator" who sounded like a slime ... -
Burnt Out My 48K. HELP!I have a number of spectrums I powered one up wrong today and killed it. I had a power supply that a while ago I rigged up to work with both the ZX8…
I think you blew up the power regulator on the board, the little black square thing with the aluminum plate screwed on... -
Burnt Out My 48K. HELP!I have a number of spectrums I powered one up wrong today and killed it. I had a power supply that a while ago I rigged up to work with both the ZX8…
... 're lucky, just the 7805 regulator. It's cheap and easy ... there. You can get this regulator from pretty much anywhere that ... -
Burnt Out My 48K. HELP!I have a number of spectrums I powered one up wrong today and killed it. I had a power supply that a while ago I rigged up to work with both the ZX8…
... 're lucky, just the 7805 regulator. It's cheap and easy ... there. You can get this regulator from pretty much anywhere that ... -
Fixing an LCD TVI'm attempting to fix a 27" LCD television that I picked up for ?10 at a boot sale. It has psu problems as sometimes it does not come off standby. Wh…
Yep tracked the problem down, it is a dodgy 1000uf 16v capacitor.
I'll get another tomorow whilst I'm getting a regulator to fix my burnt out Spectrum. -
Burnt Out My 48K. HELP!I have a number of spectrums I powered one up wrong today and killed it. I had a power supply that a while ago I rigged up to work with both the ZX8…
... 're lucky, just the 7805 regulator. It's cheap and easy ... there. You can get this regulator from pretty much anywhere that ... and they had one 7805 regulator left. It only had two ... -
Dead 48K Speccy.Blow this up as a child... thought I'd get it down from the loft and see if I can repair it. Upon power up, it displays this: [IMG]http://i266.photo…
... be checked at the 7805 regulator). And the Spectrum internally generates ... -
Dead 48K Speccy.Blow this up as a child... thought I'd get it down from the loft and see if I can repair it. Upon power up, it displays this: [IMG]http://i266.photo…
... be checked at the 7805 regulator). And the Spectrum internally generates ... -
I bought my first ZX Spectrum 48k, now what ?Hi guys ! I recently go to Brussel in Belgium and found a ZX Spectrum at a "flea market" (sorry, I don't the correct word for that, let's call it a …
... from the (3 legs) MC7805 regulator (black thing bottom right on ... -
I bought my first ZX Spectrum 48k, now what ?Hi guys ! I recently go to Brussel in Belgium and found a ZX Spectrum at a "flea market" (sorry, I don't the correct word for that, let's call it a …
... from the (3 legs) MC7805 regulator (black thing bottom right on ... -
48k spectrum restarts by itselfFirst of all hello from a newb and thank you for your help. This site has already offered me a lot of insight. I have a 48k spectrum that will boot …
... mins
- Removed the - 7805 regulator (I think) - 3 pin component ... -
Spectrum 48k run timesHow long should you expect to have your 48k turned on for? I know they get really hot so whats the max amount of time you can leave it on for? Thank…
... heat sink is the voltage regulator, this does get hot and ...
