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zx spectrum +2 troubleshootingHi There I am new here and I need some advise as to where to look for issues on my zx spectrum +2 it was working fine this morning .. then while pl…
... , but still no signal
regulator out voltage = 4.99 volts -
zx spectrum +2 troubleshootingHi There I am new here and I need some advise as to where to look for issues on my zx spectrum +2 it was working fine this morning .. then while pl…
... , but still no signal
regulator out voltage = 4.99 volts ... black? As you named a "regulator", I assume it's a ... -
Computer junkThought i start thread about this,after reading through the capacitor's thread it is true that components will exhaust themselves overtime,so for tho…
... of the case. It was 7805 one time, and some power ... -
Help with broken QLHi, I picked up a QL recently but find that after a while the keyboard stops responding. Any ideas what could be wrong? Thanks
OK I replaced the 7805CSP regulator with a 7805CV and the ... -
Opus Discovery 1 problem insideHi folks, when I opened my Opus Discovery 1 I have probably wrecked a regulator that is connected to the mainboard by three cables. Regulator 2 is wi…
... : white , red, yellow.
The regulator is LM317 and the wiring ... the position of the other regulator and the two rectifiers. I ... -
Opus Discovery 1 problem insideHi folks, when I opened my Opus Discovery 1 I have probably wrecked a regulator that is connected to the mainboard by three cables. Regulator 2 is wi…
Hi Roko,
thanks for the fast reply...
So is it a normal, that regulator 2 is connected by three cables and not an improvement by a former owner?
Groetjes naar Nederland vanuit het Sauerland... -
Opus Discovery 1 problem insideHi folks, when I opened my Opus Discovery 1 I have probably wrecked a regulator that is connected to the mainboard by three cables. Regulator 2 is wi…
... it something to do with regulator 2? Maybe I should replace ... -
Opus Discovery 1 problem insideHi folks, when I opened my Opus Discovery 1 I have probably wrecked a regulator that is connected to the mainboard by three cables. Regulator 2 is wi…
... somewhat over-enthousiastic?
Regulator REG2 handles the 5V. Note ... -
Do ULAs die?Thought I'd start this thread as people often think their ULA is dead, when it's actually the RAM or power circuits. Searching the forum in the futur…
... 5v line takes out the regulator this shouldn't harm the ... -
Do ULAs die?Thought I'd start this thread as people often think their ULA is dead, when it's actually the RAM or power circuits. Searching the forum in the futur…
... with power supply failure: dead 7805 and all transistors in the ... -
+2 power not working. Need helpHi folks, I'm hoping someone may be able to point out what could be wrong/needs fixing here. One of my +2's had a loose RF modulator. The 5v wire w…
... there is a 5 volt regulator which should the unregulated supply ... -
+2 power not working. Need helpHi folks, I'm hoping someone may be able to point out what could be wrong/needs fixing here. One of my +2's had a loose RF modulator. The 5v wire w…
... supply voltages. Possibly the +5V regulator was killed, but that's ... -
Spectrum +3 doesn't workMy recently ebay purchased +3 arrived today, so I was quite excited to have one again. I plugged it in and all was well, except for a slightly worry…
... only used as a voltage regulator, so any transistor with matching ... -
Spectrum +3 doesn't workMy recently ebay purchased +3 arrived today, so I was quite excited to have one again. I plugged it in and all was well, except for a slightly worry…
... only used as a voltage regulator, so any transistor with matching ... -
opus discovery repair?I just got one today, that isn't working.. I notice there is a schematic on here.. is there any service manual etc? there was a guy in SW London , I…
I had a faulty ROM not long ago.
Also check for cracked solder joints around the regulator/power-supply area inside. -
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…
... guess that the 5V linear regulator let out the magic smoke ... -
LCD interfacingHas anybody interfaced [url=http://mdfs.net/Info/Comp/LCD]an LCD[/url] to a Spectrum? I'm toying with putting together an interface, a small 32x8 dis…
Slightly off-topic:
There is much more that would nicely fit, as soon as the heatsink got redundant by a Recom 'regulator'!
[URL="http://www.biehold.nl/roelof/newroom.jpg"]http://www.biehold.nl/roelof/newroom.jpg[/URL] -
LCD interfacingHas anybody interfaced [url=http://mdfs.net/Info/Comp/LCD]an LCD[/url] to a Spectrum? I'm toying with putting together an interface, a small 32x8 dis…
... got redundant by a Recom 'regulator'!
[URL="http://www.biehold ... -
Issue 2 Speccy faultHi Guys, I'm really hoping someone can help me with a fault that has just developed on my issue 2 speccy. After perservering for some time with usi…
... /> The outputs of the voltage regulator circuitry are taken to the ... -
PC in a spectrum 48k bodyHow hard do you think this would be, here i found some one who managed to make one into a linux running pc but im think windows. He used some quite n…
an intel atom based motherboard would be fine. Compared to the amount of heat that the voltage regulator in the speccy dumps out a CPU is nothing ;p -
Yeuch....OMG [url]http://www.commodoreusa.net/CUSA_C64.aspx[/url]
... SD Card - ?10
Voltage regulator + Caps - ?5
Cables - ?5 ... -
Yeuch....OMG [url]http://www.commodoreusa.net/CUSA_C64.aspx[/url]
... beagleboard and (probably) the voltage regulator.
I wouldn't ... -
Yeuch....OMG [url]http://www.commodoreusa.net/CUSA_C64.aspx[/url]
... beagleboard and (probably) the voltage regulator.
I wouldn't ... -
128+ and Divide+ not working togetheri think theres something wrong with my 128 (toastrack), divide+ just wont work on it, corrupted screen on bootup and with big thick black bars rollin…
... the toaster, tested the 5v regulator with a multimeter (that I ... -
broken 48K, strange screenwell I finally socketed all lower 16K ram chips, (8 of them in a row near corner, not those 4 in two rows) and replaced them with new ones but it did…
[QUOTE=guesser;501369]you've def got a transistor blown then, I can't remember which.
the 5v line is fine, so your regulator is ok[/QUOTE]
It's TR4. With a little luck, your RAM will be fine, once you replace that transistor. -
128+ and Divide+ not working togetheri think theres something wrong with my 128 (toastrack), divide+ just wont work on it, corrupted screen on bootup and with big thick black bars rollin…
... closed before I replaced the regulator), but heres proof it needs ... -
128+ and Divide+ not working togetheri think theres something wrong with my 128 (toastrack), divide+ just wont work on it, corrupted screen on bootup and with big thick black bars rollin…
... closed before I replaced the regulator), but heres proof it needs ... -
Question about 7805 regulatorOne of my common practices when I service a ZX machine, is to replace the electrolytic caps as well as the 7805 regulator and some times the ztx650 t…
... )?[/quote]
An integrated regulator is not like a capacitor ...
