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k7zx, a utility to load programs to Spectrum at very high speedk7zx is a windows program that convert .tap, .tzx , .sna and .z80 files to a wav file that can be played to a real Spectrum. You can down load it f…
... ;166792]Does anyone tried to replace capacitor C35 of 10nF between GND ... -
Best replacement for ZTX650?What is the best replacement transistor for the obsolete ZTX650? I've read that TIP31 will do the trick. Is there a decent equivalent from the BC or …
... />
What diode did you replace the BA157 with? Not a ... power to the RAM chips). Replace the transistors, BA157s and Zener ... the two diodes and the capacitor connect together, one diode's ... it and also replaced the capacitor that was damaged.
It ... -
problem with sinclair zx 48 issue 6aHi all, I have the following problem when I turn on my sinclair without rom inserted. [url]http://217.79.64.145/sinclair/5.jpg[/url] when I turn o…
... and this capacitor is perfect :)
I will replace tr3, tr4 ... -
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…
... 4 diodes and a large capacitor. It's not difficult to ... have 3A written on it. Replace it with another. If it ... -
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…
... /> 1. 7805 is dead => replace it.
2. One of ... is detected by desoldering each capacitor and checking it via ohm ... -meter. Bad capacitor will strongly have zero resistance ... -
problem with sinclair zx 48 issue 6aHi all, I have the following problem when I turn on my sinclair without rom inserted. [url]http://217.79.64.145/sinclair/5.jpg[/url] when I turn o…
... and this capacitor is perfect :)
I will replace tr3, tr4 ... -
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…
... capacitors. Is it necesary to replace them with fresh ones?
replace electrolytic capacitors when they work ... or audio coupling capacitors. Also, capacitor tolerance value can be -10 ... -
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…
... replaced under warranty due to 'capacitor plague' - after 3 months of ... be of any relevance to replace electrolytics in the Speccies for ... -
Darkening of aging CRT monitors / PowerstripI'm using a CRT that I got way back in 1999, and it's still working, but the screen seems to have gradually darkened over the past few years. I think…
... . They have all been dry capacitor problems costing about 68p to ... TFT, identify the fault and replace it.
It is amazing ... -
Sinclair PC 200 - RF questionIs there any compatibility regarding the RF output of the sinclair pc 200? This week i got my 2nd unit and in both of them, when connected through R…
... C901 and C902 and/or replace them.[/QUOTE]
I ... . If it will be better, replace Q902 with a new one ... of R922 R924, place a capacitor in series(some µF, for ... exmaple a 22µF electrolytic capacitor) to avoid signal limitting - do ... -
Found 128k +2 in the garbageHey there, I had a 48k Plus when I was a kid (still have, actually), and used to play in a friends 128k +2, so I know the basic of these computers. …
... get sure you can replace the electrolytic capacitor inside the power supply ... to avoid new rost.
Replace the drive belt by a ... -
+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 …
If you'll replace anything, keep in mind, that voltage is more important than capacity. So, find 16V capacitor, near 6000uF and you're winner.
But, if everything works - why would you like to replace anyway? -
+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 …
... than the ones you replace.
The capacitor I'm replacing ... enough in order for the capacitor to be able to absorb ... this one had a 4700uF capacitor inside and a fuse which ... i guess using a 4700uF capacitor to replace the 6000uF on the ... -
+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 …
... of it 6000uF capacitor (its squezed too) or replace it with a ... -
Issue 3B problemHi! I have an issue 3B board that is having a strange problem: when I got it it didn't had the -5V and +12v, as usual. After replacing TR4 and TR5 t…
... socket
[*]dried up electrolytic capacitor C65 or C25 (nearby). Both ... , so easy & cheap to replace, why not do that anyway ... -
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…
Open the PSU and replace the big electrοlytic capacitor inside. That will probably fix your dodgy psu problem. I've replaced the caps in all of my spectrum PSUs. -
Trying to repair a 128K (heatsink)I've bought another ZX Spectrum 128K (heatsink model), but unfortunately the last owner did not tell me it did not work.... Because this Speccy also…
... oscillator starting.
The trim-capacitor is used to reduce the ... . And try adding a decoupling capacitor (20-100 nF) between pins ... ' when powering up.
Or replace the crystal rightaway....
Measuring ... -
Trying to repair a 128K (heatsink)I've bought another ZX Spectrum 128K (heatsink model), but unfortunately the last owner did not tell me it did not work.... Because this Speccy also…
... work when you added a capacitor to ground (i.e. your ... knows...???
Simple fix: replace [I]all[/I] components that ... -
Spectrum +3 suspected memory faultHi, I've been using my +3 for the first time in a while and found that some games have problems with the display becoming corrupted and sometimes cr…
... . I've tried those three capacitor values, on both pins, but ... it be worth trying to replace the chip to the right ... -
Trying to repair a 128K (heatsink)I've bought another ZX Spectrum 128K (heatsink model), but unfortunately the last owner did not tell me it did not work.... Because this Speccy also…
... have that trim-capacitor, but a fixed 22pF capacitor.
< ... 3. Replace the crystal
4. Replace the trim-capacitor by a ... fixed 22pF capacitor
...
Or simply replace ... -
Trying to repair a 128K (heatsink)I've bought another ZX Spectrum 128K (heatsink model), but unfortunately the last owner did not tell me it did not work.... Because this Speccy also…
... circuitry
2. Replace the 74xx04 with another ( ... 3. Replace the crystal
4. Replace the trim-capacitor by a ... fixed 22pF capacitor
...
Or simply replace ... -
Trying to fix Spectrum Issue TwoHello everybody, I bought from eBay three Spectrums - one is Issue Two and the other two are Issue 3. The Issues 3s look like they are working but t…
... measures the 'resistance' of the capacitor by sending an alternating current ... tell whether a (ceramic) decoupling capacitor is still capable of doing ... are cheap and easy to replace.... -
The components of death!One problem thats slowly rearing its head these days,is our beloved machines like amiga are slowly suffering from battery or capicator leak,it is not…
... out that drastic action and replace the capacitors on their boards ... end is which on a capacitor can fix the problem ... I think power factor correcting) capacitor in the BBC Micro's ... harmless). But that capacitor is a high voltage capacitor. Low voltage capacitors ... -
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, …
... some spare ones. The unipolar capacitor you pointed out is, as ... write, much smaller. Should I replace all the C* with such ... -
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, …
... some spare ones. The unipolar capacitor you pointed out is, as ... write, much smaller. Should I replace all the C* with such ... COULD be used an unipolar capacitor which is low ESR and ... -
Help me understand ZX RGB signal (long)This will be a long post so please bear with me and most importantly help me. I have a 128K+ and +2A that I'm trying to get working with my 15kHz RG…
... to replace the battery as needed. Or would connecting a capacitor to ... -
Recapping your SpeccyHas anyone ever done it? I have several vintage amps, tuners, cassette decks that have been recapped. So just wondering are there many on WOS who ha…
... was disconnected pin (from the capacitor body), always in power supplies ... , I can't actually remember capacitor explosions in old devices if ... this happens, you have to replace them. -
Powerpack melts! +3 survives!I woke up this morning, switched on the sockets, went to the loo 'as you do' and came back into the living room. I heard this clicking sound so I th…
... problem. that is not a capacitor but a simple wire that ... its a good idea to replace them with new ATX supplies ... -
Powerpack melts! +3 survives!I woke up this morning, switched on the sockets, went to the loo 'as you do' and came back into the living room. I heard this clicking sound so I th…
... its a good idea to replace them with new ATX supplies ... bang is because of the capacitor on the mains side letting ... -
zx81 rf outputHi All I'm not sure if this is an appropriate forum for the zx81, however I'll ask anyway;) I've connected my zx81 up to a mid 90's color tv. I can…
... .
Better is to replace modulator circuitry with a transistor ... /> My TV also preferred a capacitor in the signal (+ to transistor ... .
Above transistor buffer (+ capacitor if used) fits comfortably inside ...
