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Dead Spectrum +Hi all, I've recently dug out my old Spectrum + with the idea of repairing it. When I last looked at it, when I was much younger, I was soldering a …
... ) nutshell:
Change the ULA.
If no picture ... after modulator swop, recheck the ULA and change TR1/2 (replace ... with BC547) if ULA ok. Change the LM1889 if ... process up. He uses a hot air paint stripping gun to ... -
Dead Spectrum +Hi all, I've recently dug out my old Spectrum + with the idea of repairing it. When I last looked at it, when I was much younger, I was soldering a …
... process up. He uses a hot air paint stripping gun to ... />
I also pull the ULA out because I get the ... all of RAM and the ULA in cases where they've ... -
toasted soeccysHello, ive jsut bought a pair of speccys on ebay (one 16k issue 2 & a prob 48k issue 3) unfortunaly the genius who sold them tried to see if the wor…
... you haven't damaged those ULA chips.
... :
Change the ULA.
If no picture ... modulator swop, recheck the ULA and change TR1/2 ( ... replace with BC547) if ULA ok. Change the LM1889 if ... up. He uses a hot air paint stripping gun to ... -
Problem with my speccy 48+My machine boots up but apon booting it freezes and you can see feint grey horizontal 1 pixel lines going down the screen. Is this fixable at all?
... a thermal fault, could be ULA, Z80, ROM, RAM (etc etc ... see if anything is getting hot (or warmer than anything else ... -
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…
... have picture of tv ula it became extreme hot very quick and ... -
ULA chipHi. Where i can find a ULA 6C001E-6 chip for an 3B issue Speccy ? Also looking for one 7805 heatsink... Thank
... you sure you need a ULA chip - they are quite reliable ... 0V on ULA pin 39. The Z80 is a little hot, i ... -
Soldering surface-mount componentsWinston's latest posts about PCBs and joystick interfaces have reminded me of a question I'm really curious about. Basically: Soldering surface-mount…
... , soldering irons that used hot air, semi-sticky glues ... the surrounding area with hot air or a VERY ... small sldering iron. Too hot and they can explode, ... For SMD chips, like the ULA chip in the +3, removal ... from a vacuum tube. Hot air passed over the chip ... -
ZX Spectrum 128+ problemsHello!I recently purchased and got myself a spectrum 128+ from ebay.The item did not have an original power supply so i got a power supply of 9volts …
... worked the heatsink was getting hot.After the powersupply broke i ... nothing can pass to burn ULA or the like?
ZX Spectrum 128+ problemsHello!I recently purchased and got myself a spectrum 128+ from ebay.The item did not have an original power supply so i got a power supply of 9volts …
... worked the heatsink was getting hot.After the powersupply broke i ... nothing can pass to burn ULA or the like?
[/QUOTE ...Does anyone have any working Ferranti's?Does anyone know where I might get hold of a Ferranti ULA5C112E-3?? I think this is the problem with one of my rubber key 48K's as it otherwise wor…
... happens is, the ULA get very hot and the characters just ... ) was cured by replacing the ULA.
The ... chip replaced and the ULA checked out fine on ... otherwise) just covering the ula's surface (and not ... than nothing, and those ULA chips weren't really ...Does anyone have any working Ferranti's?Does anyone know where I might get hold of a Ferranti ULA5C112E-3?? I think this is the problem with one of my rubber key 48K's as it otherwise wor…
... - what happens is, the ULA get very hot and the characters just ... ) was cured by replacing the ULA. [/QUOTE]
The above ... pretty sure its this Ferranti ULA chip.
SimonPoorly Spectrum + Fault diagnosis help needed!Hi, I've got a Spectrum+. Sometime in the past I broke it and sent it off to be fixed. It came back working good as new, but with an issue 2 board i…
... lower 4116 RAM. The ULA normally gets hot in operation - so a ... warm ULA is generally not a ...Does anyone have any working Ferranti's?Does anyone know where I might get hold of a Ferranti ULA5C112E-3?? I think this is the problem with one of my rubber key 48K's as it otherwise wor…
... . Have you tried a different ULA chip?
... crystal yesterday.
The ULA is a 6C001E-6, ... heatsink) and made many ula heatsinks by cutting it ... Already installed one on a ula by doing the "two ... the ULA's metal surface instead of been frying hot at ...Poorly Spectrum + Fault diagnosis help needed!Hi, I've got a Spectrum+. Sometime in the past I broke it and sent it off to be fixed. It came back working good as new, but with an issue 2 board i…
... utter crap.
The ULA controls the image and is ...
2) Swop the ULA and see what happens. Not ... because the ULA is always the cause of ... for components that are getting hot. Especially the 4116 RAM chips ...Broken SpectrumsChaps ( & Mrs Death ), I was looking at getting some dynamic ram chips for the next phase of the Harlequin stuff, and I started thinking...... I've…
... />
I've got the ULA off one of them and ... first place! - not got a hot enough iron I think....)
Interface rom - Need help to dump itHi, I have temporarily an interface that is similar to a multiface. It has an NMI button and displays a menu where states can be saved and pokes ent…
... . Last night, i quickly replaced ula, rom, z80 and the logic ... heat sink and the ula were abnormaly hot.
Voltages were ...another c64 vs. Speccy site...[url]http://c64vsspectrum.com/[/url] 25 years and we are still brawling.. ;)
... ULA would need to run 8 times faster. (Just think how hot ... also have to assume the ULA's innards were fast enough ... an absolute bear - with the ULA needing to access RAM eight ...another c64 vs. Speccy site...[url]http://c64vsspectrum.com/[/url] 25 years and we are still brawling.. ;)
... talking about [B]minimal[/B] ULA improvement only, not something demanding ... ULA would need to run 8 times faster. (Just think how hot ...Which is the best spectrum to have ?Just wanted to know which is the best Spectrum to have as i know some have more bugs than others. All i wanted it for was to play games on both 48k …
... summer when it was very hot, it didn?t work correctly ... Stereo - Sound output and the ULA-Corrector (no snow in Russian ...48K specs boots, but THEN blinking blocks!Of all ZX problems I have seen, the 'blinking blocks' is the most common... Today I picked up a 48K, it boots and THEN it locks filling the screen wi…
... .
It can also be ULA, have seen this but have ... little experience with
broken ULA's so I just mention ... if any of them gets hot alot faster than rest of ...Can you see the Spectrum......in this auction? [url]http://cgi.ebay.de/ZX-Spectrum_W0QQitemZ160246792691QQcmdZViewItem?hash=item160246792691&_trkparms=72%3A445%7C39%3A1%7C65%3…
... logic rather than the 'second ULA' that the later boards had ... on screen when the ULA gets too hot.
Going by ...One's speccy is unwell, can anybody help?Hi chaps! This would be my first post here, so hello to all :smile: I've got a 128+ heatsink speccy that seems to have a display issue whereby after…
... . IC36 cool.
4. ULA ludicrously hot. I can my leave finger ... . IC27 cool.
8. Z80 hot but not uncomfortable.
9 ... /> 12. IC33 quite hot.
13. IC34 quite hot.
The ...Is it possible to use external power supply for +-12; +-5 for ZX SpectrumRecently I acquired a damaged Sinclair ZX Spectrum, issue 3B. According to the maintenance manual I have to replace TR4 and TR5. These type of transi…
... getting abnormally warm. Only the ULA should get detectably warm.[/QUOTE ... transistors I've removed the ULA in order to save its ... not if it could be hot.
One of the ...+2a datacorder problemsHelloooo, how's it going? Reason I'm posting is that 1) I'm a massive speccy fan, it was the first range of computers I ever owned 2) I'm having rea…
... , skill and ofcourse, proper equipment (hot air gun which not everybody ... /> Lets just say that this ULA isn't easy to replace ... just hope its not the ULA afterall. If the "tape in ... don't see how the ULA could be damaged by the ...Difference in emulator screen sizes and coloursSeeing as Greencard's gone out drinking... I've done a comparison between Spectaculator and ZXSpin. ZXSpin's full screen with border is taller than S…
... /../faq/reference/pinouts.htm#ULA"]ULA[/URL]; both the interrupt ... forums/../faq/reference/pinouts.htm#ULA"]ULA[/URL] has started displaying ... slightly as the Spectrum gets hot; the reason for this ... /../faq/reference/pinouts.htm#ULA"]ULA[/URL] has been observed ...Inside the ULAI've recently updated my Blog with the news that I've managed to get inside a 6C001E ULA and have got close up images of the die. I'm currently back-…
Oh, incidentally, how's the ULA replacement going? I saw that ... syringe of the stuff) and hot air is by far the ... bit that plugs into the ULA socket, you can get SMD ...128k heat sink - ULA problems and a hintHello, I had two ZX Spectrum 128k with a similar behaviour. One item worked only a short time after switching on and then there were increasing RAM …
... .
Heat sink area gets HOT and the keys surrounding K ... sure sounds like a duff ULA that disfunctions after heating up ...128k heat sink - ULA problems and a hintHello, I had two ZX Spectrum 128k with a similar behaviour. One item worked only a short time after switching on and then there were increasing RAM …
... sounds like a duff ULA that disfunctions after heating ... told that also keys are hot and "start to auto ... ". That sounds like very hot heat sink. So first ... regulator, then giving the ULA an additional heat sink and ... if ULA problems remain then I ...128k heat sink - ULA problems and a hintHello, I had two ZX Spectrum 128k with a similar behaviour. One item worked only a short time after switching on and then there were increasing RAM …
... get hot and malfunction, rather than a dodgy ULA chip. The ULA gets ... down when it gets too hot anyway, and this would explain ... ] ) the output and get VERY hot in the process, and the ... adjustable regulators, but they get hot too :)
Maybe a ...128k heat sink - ULA problems and a hintHello, I had two ZX Spectrum 128k with a similar behaviour. One item worked only a short time after switching on and then there were increasing RAM …
... sure sounds like a duff ULA that disfunctions after heating ... ]Maybe, but consider that ULA is also responsible for key ... get hot and malfunction, rather than a dodgy ULA chip. The ULA gets ... adjustable regulators, but they get hot too :)
Maybe ...
