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General PSU repair guidesNot Speccy related. I'm just looking for a guide as such as to where to begin with a power supply repair. Realise this is a bit of an odd thing to as…
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To my mind a PSU is simple (this is not ... 's me done with a PSU! :D
The unit ... the mainboard even a tiny 'diode' size one, unless its a ... ones inside the BBC Micro PSU actually.
There are four ... -
Is This PSU Useable on the Speccy?I just got my Speccy and the PSU has had some 'work' done to it. Somebody has added an extra length of cable on it but rather than soldering or crim…
... for the standard ZX Spectrum PSU is 9V @ 1.4A. This ... technology of standard transformer, a diode bridge and smoothing capacitor is ... a newer switch mode type PSU. I deduct this from the ... PSU can source the required current.
The suggestion of Zorn ... -
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…
[QUOTE=Renegade;783081]Zorn, I watched your ... understand what type of diode you used.:-?
... an example of a suitable diode?[/QUOTE]
... Almost any ordinary silicon diode that can handle the current ... place it inside the PSU, make sure all its ... -
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…
[QUOTE=Zorn;783085]Almost any ordinary silicon diode that can handle the current ... 't anything special about this diode, it's just what I ... . Don't use a Schottky diode or any other special purpose ... you place it inside the PSU, make sure all its connections ... -
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…
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I currently have 2 PSU for the 48k Spectrum: one ... to put the diode in according to Zorn's video. In ... a small section of the diode leg un-insulated I ... />
Could a second diode in series be of additional ... this way and keep this PSU for a 48k with ... -
what are exact current values on +2A's PSUI like to know what is written on an original +2A PSU nearby each voltage. I mean the current for +5V, the current for +12V and the current for -12V.…
I like to know what is written on an original +2A PSU nearby each voltage.
I mean the current for +5V, the current for +12V and the current for -12V.
Thank you.
Best wishes,
Cristi -
TS2068 PSU?Just wondering what is the voltage and polarity that the TS2068 PSu has. My unit has no PSU, and I was expecting to either use my Spectrum 12V power …
... and polarity that the TS2068 PSu has. My unit has no ... PSU, and I was expecting to ... -
Humming psuI have just got myself a +2b and the psu is buzzing like mad. It seems to be working fine, though. It arrived this morning and I have had it switched…
... myself a +2b and the psu is buzzing like mad. It ... -
What PSU is suitable for +2?if I don?t have the original one, what PSU I?ll need for that?
if I don?t have the original one, what PSU I?ll need for that? -
BA157 diodeUsed in Speccies, so not too off topic :P Right, it's a "fast recovery rectifier diode" - can anybody tell me what that means exactly? Fast recover…
... 's a "fast recovery rectifier diode" - can anybody tell me what ... what the difference between this diode and a normal 1N40XX is ... "it's a fast recovery diode" -
+3 psu schematics and partsHi everyone. Does anyone have or knows where to get the +3 psu schematic? I'm trying to repair one but i cant find any info on the parts reference. …
... where to get the +3 psu schematic? I'm trying to ... a regulator).
The psu outputs 12V but not the ... -
kempston and/or psuhi there, just wondering if anyone had a spare kempston adaptor they wanted to give a good home? i will pay a couple of quid + postage for it, and …
... interested in a +2A / +3 PSU, although i realise the likelyhood ... it atm, and my +2A psu is lost, and so needs ... go chucked out) or the psu, but to no avail. however ... -
replacement +3 psuok, who would be kind enough to help an idiot build a replacement PSU for the +3 / +2a , from a PC power supply? Guesser has already helped out a gr…
... an idiot build a replacement PSU for the +3 / +2a , from ... i've found a PC PSU and i've gone out ... at the side of the PSU and looks like this helps ... this page about the +3 psu, and i'm finding it ... -
Can a 48K PSU power a 12K Speccy?Hiya Does anyone know if the 128K speccy (the heatsink one, not a +2 or +3) can run using the same PSU as a 48K rubber keyed jobby? Have been think…
... ) can run using the same PSU as a 48K rubber keyed ... rating on the 128K bundeled PSU is only 400mA higher than ... -
+3 PsuHi all, Just been digging at the back of my wardrobe, and found a +3 PSU the 12V+ and the 12V- works but not the 5V+ has any one got a diagram for a …
Hi all,
Just been digging at the back of my wardrobe, and found a +3 PSU the 12V+ and the 12V- works but not the 5V+ has any one got a diagram for a +3 PSU please.
TIA -
spectrum PSU'sI've read contradictory info on which psu(ie amp rating) is for which spectrum. :confused: The models and amp ratings are 1.2A, 1.4, 1.85 and 48k, …
... read contradictory info on which psu(ie amp rating) is for ... (assuming its not the correct psu)?
I have used tghis ... -
+3 PSU PoorlyI have a +3 that just stopped working. Its the psu thats gone and opening it up discovered a blown fuse. After replacing the fuse it still doesnt wor…
... just stopped working. Its the psu thats gone and opening it ... -
PSU polarityHi! I have a speccy+ psu and somewhere there is a loose connection.I suspect the end to the speccy side. I need to cut the wire and put a new socket.…
... !
I have a speccy+ psu and somewhere there is a ... -
PSU queryHi all, just one quick question. Are Spectrum PSU's compatible with ZX81's? I've just bought an '81 off of Ebay, which was sold as "working, but the …
... one quick question. Are Spectrum PSU's compatible with ZX81's ... machine if it does. Both PSU's are 9 volt, so ... -
+2 grey PSU capacitor changeHi I opened up a +2 grey power supply (2.1A max output) unit in order to replace the aged electrolytic capacitor inside, just like I always do with …
... which is what the sinclair PSU (heatsink 128K 1.85A max ... max output on the grey psu is 2.1A instead of ... -
3rd party psu's?I'm just curious if there is a new easily available none sinclair psu for a spectrum+ that I could get / use ?
I'm just curious if there is a new easily available none sinclair psu for a spectrum+ that I could get / use ? -
48K PSU on / off switchI keep meaning to fit one of these into the (mains side) flex once I find a black one to match... [url]http://www.maplin.co.uk/Module.aspx?ModuleNo=…
... (not looked inside a 48k psu for a long long time ... , and I have had a PSU that had something like this ... -
PSU unit spectrum 128k +2b 6 pinout DINHello everybody! I have spectrum 128k +2B but I don't have the 6 pin PSU and I can't find it anywhere. Can you anyone tell me where can I buy this PS…
... 't have the 6 pin PSU and I can't find ... where can I buy this PSU for this spectrum? Or can ... to convert a normal output psu unit with the same voltage ... -
Spectrum 48K with a thyristor PSU possible?Is it posssible to use a Spectrum 48K with a thyristor switched PSU? I have a PSU with a thyristor, 4 diodes, one electrolyt capacitor, some resistor…
... with a thyristor switched PSU? I have a PSU with a thyristor ... -
grey +2 psu on an original 128?I have a 128 and both +2's.. a / b.. I notice one PSU is the same as the 128 , just grey and the 128 PSU I have is, well I will get it looked at .. i…
I have a 128 and both +2's.. a / b.. I notice one PSU is the same as the 128 , just grey and the 128 PSU I have is, well I will get it looked at .. it's not 100%
anyway, your thoughts are welcome.. thanks -
How to fix dc voltage on a 48+ psuAfter dinner, after a womble video out mod on a "new" purchased 48+ , just in the remaining time I tested the voltage of its psu and, surprise surpr…
... tested the voltage of its psu and, surprise surprise, the result ... I tested a +2 grey psu too, and it gave me ... V. I opened the 48 + psu and discovered that there were ... -
Issue 2 issue (...)Just acquired an issue 2 Spectrum 48 K, selled as working board, not working keyboard. Before testing it with a psu I opened the case and discovered …
... . Before testing it with a psu I opened the case and ... problems, speaks about of a diode (IN 4148 ) and of a ... -
Speccy+2/2A psu difference?Just curious,do speccy+2/2a use the same psu or are they slightly different?.
Just curious,do speccy+2/2a use the same psu or are they slightly different?. -
zx spectrum+128k PSU problemLast time I bought zx spectrum+128k heat sink, but without PSU. What PSU can I use ? I have also spectrum 128+2 grey model with power supply. Is that…
Last time I bought zx spectrum+128k heat sink, but without PSU.
What PSU can I use ? I have also spectrum 128+2 grey model with power supply. Is that psu fine or not ? -
128k+ PSUAfter reading an earlier thread I inspected the two PSU's I have for my 48 and 128+, it seems I have the same type, 1.4amp, when the 128 needs 1.85am…
... thread I inspected the two PSU's I have for my ...
