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spectrum +2 tape recorder is dead helpMy +2 grey's tape recorder is not even coming on when i press play so i was wondering with the 5 cables going into a plug and then connecting on to a…
Start at the cassette connector on the motherboard. Is there power there? If so then follow the circuit until you find a break.
If it was working, then was transported and now doesn't that screams broken wire or cracked trace to me. -
Dead 128K heatsinkUnfortunately my 128K heatsink died suddenly and with no apparent reason. I had the Kempston Pro interface connected and when i powered it on the ztx…
... /> The electrolytic caps in the power cirquit I can replace, its ... problem is somewhere in the power cirquit?
I ... a different machine but the power cirquit seems the same with ... br /> 2. Check that TR5 circuit components are to latest specification ... -
Repairing a faulty 48K issue 2.I am investigating one of a pair of non-working issue 2 48K Spectrums that have been sitting in a cupboard untouched for quite a few years. I haven…
... least a complete short circuit on its power input) and a 48K ... been having some frustration with circuit diagrams. I've been mostly ... of any more accurate Spectrum circuit diagrams?
Back to ... -
+3 No power LED, disc motor continually spinning..and no display. I searched the posts and i found a really old thread going back to 2004 where fuses in the psu were discussed, checked em in this an…
The +3 is perfectly good for running the +3. The problem comes when you put excessive load on it, either by something causing a short circuit, or too much stuff taking power from the edge connector. -
Issue 2 voltage troubleDear all, I got my hands on an old issue 2 from a friend. Price was close to zero so I did not hesitate to take it. After powering it up I was sur…
... (D11 in the powersupply circuit) was taking power away. It was found ... -
Issue 2 voltage troubleDear all, I got my hands on an old issue 2 from a friend. Price was close to zero so I did not hesitate to take it. After powering it up I was sur…
... takes approx 680mA from power supply and voltage drops from ... - Remove 12V line to Video circuit. Still the same low reading ... )
- Power up the Video circuit by external 12V power supply. Colours ... are back, so video circuit seems ... -
Repairing a faulty 48K issue 2.I am investigating one of a pair of non-working issue 2 48K Spectrums that have been sitting in a cupboard untouched for quite a few years. I haven…
... draws only 400mA from its power input. I've had it ... can post the layout and circuit diagrams I used should any ... -
Repairing a faulty 48K issue 2.I am investigating one of a pair of non-working issue 2 48K Spectrums that have been sitting in a cupboard untouched for quite a few years. I haven…
... additional capacitor installed in the power supply circuit, but the bad one ... -
Repairing a faulty 48K issue 2.I am investigating one of a pair of non-working issue 2 48K Spectrums that have been sitting in a cupboard untouched for quite a few years. I haven…
... the recommended changes to the power supply circuit and so far it ... -
Doom 3 is now open source!I'm no fan of Doom 3, but I think it's great news that id Software has released the game's source code* into the public domain, so that the game can …
... a problem (unless the Dark Mod is *very* resource hungry).< ... [/quote]
Dark Mod requires more power than Doom3 did - the ... should check out the Thievery mod for Unreal Tournament. Great ... multiplayer thief.
Dark Mod is well worth a punt ... -
Doom 3 is now open source!I'm no fan of Doom 3, but I think it's great news that id Software has released the game's source code* into the public domain, so that the game can …
... />
Dark Mod requires more power than Doom3 did - the ... should check out the Thievery mod for Unreal Tournament. Great fun ... , multiplayer thief.
Dark Mod is well worth a punt ... -
Repairing a faulty 48K issue 2.I am investigating one of a pair of non-working issue 2 48K Spectrums that have been sitting in a cupboard untouched for quite a few years. I haven…
... a 5C112. Other suspects: crappy power supply / bypass capacitors, transistor inverter ... SRAM vs. the slower low-power types.[/QUOTE]
circuit (at least I assume ... cause a problem. The circuit is a fairly standard one ... -
Repairing a faulty 48K issue 2.I am investigating one of a pair of non-working issue 2 48K Spectrums that have been sitting in a cupboard untouched for quite a few years. I haven…
... R57 I also modified the power supply circuit (resistor change and addition ... examining them and is the power supply modification likely to have ... one or more of the power lines and that's what ... is on the Issue 2 circuit diagram. As I mentioned somewhere ... -
Spectrum +3, Issue 2...I have just had plonked on my desk a nice issue 2 Spectrum +3. I'm not sure if its 100% working yet, as I have not plumbed it into a telly. So, assu…
... I advocate "upgrading" the circuit in the +3 to the ... disabling the noisy FM circuit I guess everyone is ... you do a composite mod you remove the 33pF ... sound modulator to the video circuit. Once you've done ... that the whole FM modulator circuit is redundant but [I ... -
What spectrum?I am going to have a gent send me some Spectrum hardware in the future. Me being a american and knowing nothing of the sort, what would be the best o…
... can always do some video mod to any Spectrum model to ... 1226]With a simple internal mod[/url], composite video+audio can ... Spectrum128/SCARTCable/Spectrum128SCARTCable4.htm]simple circuit with resistors and diodes[/url ... this computer have this circuit built-in. -
BeginnerIm having a go at fixing a spectrum which has been in the loft for 20 years and would like some advice please.... I have downloaded the 'spectrum se…
... the switch mode power supply (this is the circuit that includes TR4 ... pin-out!) to make the circuit more robust. -
BeginnerIm having a go at fixing a spectrum which has been in the loft for 20 years and would like some advice please.... I have downloaded the 'spectrum se…
... negative side of C46. The power convertor went through several modifications ... D18 depending on the actual circuit. Might be worth to check ... -
BeginnerIm having a go at fixing a spectrum which has been in the loft for 20 years and would like some advice please.... I have downloaded the 'spectrum se…
... created by the switch mode circuit, that Tr4 cannot be broken ... -5V because:
1. the circuit is interrupted, copper trace or ... 4116ses are sucking all -5 power away. In that case the ... -
BeginnerIm having a go at fixing a spectrum which has been in the loft for 20 years and would like some advice please.... I have downloaded the 'spectrum se…
... principle, possible to cut the power supply PCB traces to disconnect ... able to independently investigate the power converter circuitry. The problem I ... a fairly simple SRAM based circuit. I've been doing some ... -
Please help! connecting speccy to a new style digital TVHi- I've been emulating for years but have just bought a real 48k Speccy to get that 'real' feeling of my youth (and to play my home programed games …
... /11/zx-spectrum-composite-video-mod.html[/url]
(Some ... the Spectrum composite mod have you make a little circuit with a ... probably worth doing the composite mod if you can anyway.
A Thread with not much Speccyness about it..Sorry this not only non-speccy related but is also somewhat C64 related:o But hey this is the chit forum is it not? Anyway, I already posted this q…
... good idea. You can power it off of one ... QUOTE]
The power supply I am using is ... small external power brick and then a small circuit board is ... the only thing related to the power ... will see the small power board inside the case.< ...A Thread with not much Speccyness about it..Sorry this not only non-speccy related but is also somewhat C64 related:o But hey this is the chit forum is it not? Anyway, I already posted this q…
... , hard drive and circuit board for the power attached to the bottom ...what is this crazy modfound a speccy in my loft yesterday,and it seems to have an external heatsink modd i havent the foggiest about speccys heres a few pics [url]http://i…
Look at the size of that heatsink! Where do the other leads go? I don't know the ins and outs of the circuit layout but I'm scared by the power it looks like it's intended to handle.
I wonder if maybe it's an adaptation to run off a car battery?what is this crazy modfound a speccy in my loft yesterday,and it seems to have an external heatsink modd i havent the foggiest about speccys heres a few pics [url]http://i…
... of the circuit layout but I'm scared by the power it ...what is this crazy modfound a speccy in my loft yesterday,and it seems to have an external heatsink modd i havent the foggiest about speccys heres a few pics [url]http://i…
... some sort of either power regulator or power amplifier that's the ... sort with its own independant power supply. It does seem to ... called "soundboost" it has some circuit diagrams inside and a few ...DivIDE questionCan anyone advise me if this is a good option for a DivIDE? [url]http://www.ebay.co.uk/itm/256MB-IDE-SLC-Flash-Module-44pin-DOM-DiskOnModule-tested-…
Here cf adapter mod:
[url]http://divide.cz/index.php?y=CF_prima.en[/url]
There are also CF cards that do not need such power mod at all.Making a Zx Spectrum betterIs there anyway to make my Grey ZX Spectrum more power efficient and more reliable from the original you get. What I mean is we all know the ZX Spec…
... keep meaning to relocate the power socket on my +2A and ... the huge chunky multi-core power lead.
It'd ... holes sit right on the circuit board, so there's no ...Colour blocks on displayHi all, I have just acquired another Sinclair product, my first one being a C5, it's a 48K ZX Spectrum. It shows colour blocks on the display when p…
... problem with the voltage converter circuit or power supply connections to the ... the Issue 2 voltage converter circuit failing. If that has happened ... ; the little + symbol on the circuit board is on the wrong ...128K heatsink no color in composite video and bad antenna outputI am currently repairing a ZX Spectrum 128K heatsink model. It gives no colors on composite video output, and very bad antenna output. I opened it a…
... ULA
- the composite video circuit after the TEA2000
- the ... circuit
I really think it has to be the power ...128K heatsink no color in composite video and bad antenna outputI am currently repairing a ZX Spectrum 128K heatsink model. It gives no colors on composite video output, and very bad antenna output. I opened it a…
... but if you see the mod to have composite video on ... still a defect in the power circuitry.
But I ...
