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Classical music on the Speccy?While I was watching CVP409 videos on YT, I found a few movie scores and it made me start yet another topic about the AY chip. I know the beeper and…
... customised Moog Modular Syhtesiser.
Tr4 1966, Wendy Carlos on an ... -
Classical music on the Speccy?While I was watching CVP409 videos on YT, I found a few movie scores and it made me start yet another topic about the AY chip. I know the beeper and…
... customised Moog Modular Syhtesiser.
Tr4 1966, Wendy Carlos on an ... -
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…
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…
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…
... replace tr5 - it was always tr4 but you had to fix ...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…
... replace tr5 - it was always tr4 but you had to fix ... replaced it, then I replaced TR4 and TR5. TR5 was okay ... , but TR4 was dead. After replacement power ...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…
... supply from the collector of TR4.
The original Spectrum ...+3 compositve video out problemToday, I've tried to put a composite video out in my +3. I've built the circuit proposed [url=http://www.secarica.ro/html/plus3_hardware.html#composi…
... was not between emitter of TR4 and output.
RN1 ... was between emitter of TR4 and ground, and video output ... taken directly from emitter of TR4.
Thanks to mcleod_ideafix ...+3 compositve video out problemToday, I've tried to put a composite video out in my +3. I've built the circuit proposed [url=http://www.secarica.ro/html/plus3_hardware.html#composi…
... was not between emitter of TR4 and output.
RN1 ... was between emitter of TR4 and ground, and video output ... taken directly from emitter of TR4.[/QUOTE]
No, the ...Speccy 48In my messing around with hardware, I have managed to nacker a Speccy 48 board. Specifically, i have managed to mess up the power inverter section. …
... standard ZTX650 transistor as a tr4, i think it needed to ...Issue 2 Spectrum overheating keyboard membraneI think I have an issue 2 ZX Spectrum. I don't want to take it apart again as I had problems replacing the keyboard membrane. With Interface 1 conne…
... -5volt switching regulator circuit around TR4/5 (not sure about the ...sinclair zx spectrum issue 6a (again) - how to repairHi All, Is there someone who may explain what these jumpers can be used for. [url]http://forest.no-ip.org/repair/jumpers.gif[/url] <- this is from …
... , replacing just the 7805 and tr4, it just booted ok! i ... , hoping it was just the tr4 but no luck.
Replaced tr4 but the new one started ... an BC557 and another new tr4 (ztx653) and it started to ...sinclair zx spectrum issue 6a (again) - how to repairHi All, Is there someone who may explain what these jumpers can be used for. [url]http://forest.no-ip.org/repair/jumpers.gif[/url] <- this is from …
... 're lucky just before the tr4 is blown, touch all memory ... be necessary to replace the tr4 each time you try. If ... it off immediately to prevent tr4 from having to be replaced ...sinclair zx spectrum issue 6a (again) - how to repairHi All, Is there someone who may explain what these jumpers can be used for. [url]http://forest.no-ip.org/repair/jumpers.gif[/url] <- this is from …
... a very lucky person :-( . Hot tr4 to the point of burning ... from the coil started! and tr4 remained cool...
The ...sinclair zx spectrum issue 6a (again) - how to repairHi All, Is there someone who may explain what these jumpers can be used for. [url]http://forest.no-ip.org/repair/jumpers.gif[/url] <- this is from …
... checked the buzz sound and tr4 temperature by placing my finger ... off while replacing both the tr4 and tr5 just worsened the ...issue 6a faultyHi All I got issue 6a pcb from ebay with status faulty pcb had bad voltages when I power up I changed tr4 ztx650 and all voltages got back on ic6 I h…
... ..
oops i forgot about tr4 ztx650 nothing interesting i simple ...Spectrum +2 (Grey) Composite Out IssueHi, i have just acquired a grey Spectrum +2. I always use composite video to display output from my collection of machines. When i hook up my trusty…
[QUOTE=ingo;343330]Look or TR4 on the board. If it ...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…
... ?n;344572]
After replacing TR4 and TR5 the -5V came ...128K +2 (Grey) no image output.Got an 128K +2 Grey that works in every aspect except no image (neither from RF or RGB), swaped the RF from my 48K+ witch was working well and tested…
... .
[QUOTE]Look or TR4 on the board. If it ... on my +2, inverted the TR4 2n3904, and changed LK7 link ...issue 4s for reapirHi All, This time I have issue 4s for repair :) Here is few screen shots and small movie after boot. [url]http://forest.no-ip.org/issue4s/[/url] I kn…
... tell us the "name" of TR4 and TR5? TR5 is easy ... change ( I put BC557 ) but TR4 is more critical ( I change ...issue 4s for reapirHi All, This time I have issue 4s for repair :) Here is few screen shots and small movie after boot. [url]http://forest.no-ip.org/issue4s/[/url] I kn…
Hi, Jos? Leandro :)
tr4 = C2236a (y k 4g) that ...No picture on my LCD monitorHi all, more tech help required. I have my + 2 powered up ok. but when I run the yellow RCA lead from TV out to my convertor box I get no pict…
... /> Note also that the transistor TR4 2N3904 often is soldered vice ...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, …
... maybe have a problem with TR4&TR5 and your Spectrum ...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, …
... maybe have a problem with TR4&TR5 and your Spectrum ...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, …
... tells, that the two transistors TR4 and TR5 which gives supply ...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, …
... maybe have a problem with TR4&TR5 and your Spectrum ...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, …
... DC-DC converter that uses TR4 and TR5. If you can ...
