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Issue 4s - Not 'Jailbars' but lines alloverIt's not another 'Jailbars' question!, but I've got this Issue 4S that aside from the 'Jailbars' on the Paper area of the screen which I can live wit…
Ok, I've swapped the regulator with no difference and just ... -
'Interesting' Issue 2 modSo I've been lurking on this forum for a while and I've got to the point where I want to see if I can repair a speccy.. so I bought me a 'broken' one…
... produced by the 7805 voltage regulator, which should work regardless of ... -
'Interesting' Issue 2 modSo I've been lurking on this forum for a while and I've got to the point where I want to see if I can repair a speccy.. so I bought me a 'broken' one…
... that would suggest that the regulator has killed itself too? :(
'Interesting' Issue 2 modSo I've been lurking on this forum for a while and I've got to the point where I want to see if I can repair a speccy.. so I bought me a 'broken' one…
... the left side of the regulator. From there, Pin 1 (left ...'Interesting' Issue 2 modSo I've been lurking on this forum for a while and I've got to the point where I want to see if I can repair a speccy.. so I bought me a 'broken' one…
That's a good start then!
Are you sure you measured the 5V rail at 11V? If so, either the regulator has shorted its input to its output or something else on the PCB is doing so.'Interesting' Issue 2 modSo I've been lurking on this forum for a while and I've got to the point where I want to see if I can repair a speccy.. so I bought me a 'broken' one…
... on the IC point, the regulator pin and on the input ... the middle pin of the regulator as the ground.'Interesting' Issue 2 modSo I've been lurking on this forum for a while and I've got to the point where I want to see if I can repair a speccy.. so I bought me a 'broken' one…
... right most legs of the regulator and between each and the ...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…
... ", however I put the voltage regulator on the outside with a ...'Interesting' Issue 2 modSo I've been lurking on this forum for a while and I've got to the point where I want to see if I can repair a speccy.. so I bought me a 'broken' one…
... not right then. Remove the regulator and repeat the measurement between ... PCB and on the removed regulator. Try with the probes both ...'Interesting' Issue 2 modSo I've been lurking on this forum for a while and I've got to the point where I want to see if I can repair a speccy.. so I bought me a 'broken' one…
'Interesting' Issue 2 modSo I've been lurking on this forum for a while and I've got to the point where I want to see if I can repair a speccy.. so I bought me a 'broken' one…
... , also always check / test that regulator 0V or common connections are ...ZX Spectrum upper RAM module (4532/4164 replacement)Following the [URL="http://zx.zigg.net/LRR/"]lower RAM replacement module[/URL], there have been quite a lot of requests for something similar for th…
... ) 620mA
- with switch mode regulator -220mA (400mA)
- with Lower ...+2a/b power questionWill a power supply from a +2a/b be sufficiant to run a +3 if no other devices are connected to it? i know its not ideal but its all i can put my ha…
ZX81 internal RAM board?Just a quick question to Zorn (amongst others). What would the issues be with fitting one of Zorn's RAM boards into an unexpanded ZX81? Seems to me…
... new membrane and a switching regulator.
I was wondering ...ZX81 internal RAM board?Just a quick question to Zorn (amongst others). What would the issues be with fitting one of Zorn's RAM boards into an unexpanded ZX81? Seems to me…
... new membrane and a switching regulator.
I was wondering ...Modern PSUHello everyone, I'm looking for a modern PSU for my Spectrums and my dual set of 3.5'' floppy drive+HxC floppy emulator. The one for Spectrum should …
... mechanism (usually a linear voltage regulator) to maintain a stable ... work, so a 9V regulator usually requires at least 10V ... huge heatsink attached to the regulator inside.
The ... efficiently than a linear voltage regulator. Rather than burning the ...Modern PSUHello everyone, I'm looking for a modern PSU for my Spectrums and my dual set of 3.5'' floppy drive+HxC floppy emulator. The one for Spectrum should …
... , these all have internal voltage regulator circuitry. They are designed to ... heat that the internal 5V regulator has to dissipate, go for ...Modern PSUHello everyone, I'm looking for a modern PSU for my Spectrums and my dual set of 3.5'' floppy drive+HxC floppy emulator. The one for Spectrum should …
... standard PSU with a regulator to about 9V. This ... drop on the internal regulator and thus dissipate less ... the voltage drop over the regulator.
I ... supply with a 9v regulator which feeds the Spectrum ... 5V and 12 V Regulator which feeds the floppy ...Modern PSUHello everyone, I'm looking for a modern PSU for my Spectrums and my dual set of 3.5'' floppy drive+HxC floppy emulator. The one for Spectrum should …
... , it'll mean the 5V regulator inside the Speccy generates less ...Modern PSUHello everyone, I'm looking for a modern PSU for my Spectrums and my dual set of 3.5'' floppy drive+HxC floppy emulator. The one for Spectrum should …
... -load measurements taken at the regulator.
Personally I used ...How important is the 9V line?I'm in the middle of resurrecting an Opus Discovery. The transformer is gone so Im using a small switched mode PSU from a PC. My plan is to bypass …
... under load condition. Otherwise the regulator is getting too hot reducing ... be to use a switching regulator inside the spectrum instead of ... possible to use a switching regulator modul to reduce the 12V ...How important is the 9V line?I'm in the middle of resurrecting an Opus Discovery. The transformer is gone so Im using a small switched mode PSU from a PC. My plan is to bypass …
... under load condition. Otherwise the regulator is getting too hot reducing ... be to use a switching regulator inside the spectrum instead of ... possible to use a switching regulator modul to reduce the ... a look for a suitable regulator online.....
This ...Short Circuit Damage?Hey Spectrum fans, Currently trying to diagnose what is wrong with my 48K Issue 4B ZX Spectrum. The initial problem was the fact it would not boot -…
... lower RAM chips. The Voltage Regulator showed a stable output of ...Weird symptom number 2...I got a new keyboard membrane for my Spectrum+ plugged it in and low and behold the weird left to right printing of the copyright message disappeared…
... too hot. See, the 7805 regulator will close down when it ... of metal they bolt the regulator chip onto is smaller than ... volts, you are pushing the regulator hard, and much above 13 ...Weird symptom number 2...I got a new keyboard membrane for my Spectrum+ plugged it in and low and behold the weird left to right printing of the copyright message disappeared…
... /ts7805cz-1a-positive-fixed-voltage-regulator-to220-case-ql31[/url]
Weird symptom number 2...I got a new keyboard membrane for my Spectrum+ plugged it in and low and behold the weird left to right printing of the copyright message disappeared…
... tab of the 7805 regulator is electrically connected to ... ts7805cz-1a-positive-fixed-voltage-regulator-to220-case-ql31[/URL][/ ... ts7805cz-1a-positive-fixed-voltage-regulator-to220-case-ql31j"]http:// ... -1a-positive-fixed-voltage-regulator-to220-case-ql31j[/URL]< ...Sinclair ZX Spectrum 128My loving mum has brought me back one of these beauties from a carboot sale but I'm haven a slight problem with it I CAN'T FIND THE ON SWITCH!!!!!…
... should be) a 78S05 voltage regulator. The wiring looks ok (red ...Sinclair ZX Spectrum 128My loving mum has brought me back one of these beauties from a carboot sale but I'm haven a slight problem with it I CAN'T FIND THE ON SWITCH!!!!!…
... should be) a 78S05 voltage regulator. The wiring looks ok (red ... and I just soldered the regulator to them. That's why ...Studio Ghibli ReviewsThis thread covers my short reviews of the films from Studio Ghibli, the most revered and well-known anime studio in Japan - and related films. The l…
... Fireflies) and produced by Koichi Murata, this is the third adaptation ...Issue 1 oddityHello to everybody, I have a very first under my hands - a broken Issue 1. Apart from the classic "broken lower RAM" syndrome which will be easily t…
... /> Brand new capacitors. Brand new regulator. Brand new Variable Resistors. Brand ...
