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New video about S-video on Spectrum 128 / +2I just made a video about an S-video modification on a Spectrum +2. Most of the technical details are in the video; if you have any questions about i…
... that connects the luminance output of the TEA2000 chip at pin ... fed to the luminance input of the TEA2000 using the coupling ... C31. The TEA2000 receives a combination of the luminance signal and ... both removed, so the TEA2000 luminance input no longer receives the ... -
Tea2000Hi Does anybody know of a stockist for the TEA2000 Chip or is their a replacement.
Hi
Does anybody know of a stockist for the TEA2000 Chip or is their a replacement. -
Tea2000Greetings! Prompt analog PAl/NTS Encoder - TEA2000? Has broken it is necessary to substitute, and I have not found the given type in free sale.
Greetings! Prompt analog PAl/NTS Encoder - TEA2000? Has broken it is necessary to substitute, and I have not found the given type in free sale. -
Newbie Hardware QuestionsI just recently aquired my first Spectrum, a +2, and I'm in the process of getting acquainted with it. Being a newbie I had some questions, which …
... 15uH inductor mod to the TEA2000 and another for decoupling the ... is there any other color/luminance controls on the board I ... -
No VCC on the TEA2000 on a +2 greyI'm trying to fix a +2 grey that has no RF and composite out, RGB is good and the machine works just fine. I thought it would be an easy job... repl…
... on pin 11 of the tea2000 is absent... replaced the ztx ... vcc on pin11 of the tea2000.
Voltage on all ... -
+2 (Grey) S-video?I have a pretty good Composite/S-video to VGA adapter that does a nice work of running my retro machines on an old LCD screen. However, it looks best…
... br />
The luminance signal emerges from the TEA2000 at pin 7 ... point you would have a luminance output. The standard 128 composite ... The relative amplitude of the luminance signal coming out of pin ... pin 8 with the standard luminance signal, if this voltage ... -
+2 (Grey) S-video?I have a pretty good Composite/S-video to VGA adapter that does a nice work of running my retro machines on an old LCD screen. However, it looks best…
... to risk blowing up the TEA2000. Next to the ULA, that ... pin 7 (now Chrominance and Luminance) can be fed to transistor ... FM sound carrier onto the luminance signal must be removed just ... -
+2 (Grey) S-video?I have a pretty good Composite/S-video to VGA adapter that does a nice work of running my retro machines on an old LCD screen. However, it looks best…
... Pin 8 on the TEA2000, I separate the Luminance from the signal ... -
+2 (Grey) S-video?I have a pretty good Composite/S-video to VGA adapter that does a nice work of running my retro machines on an old LCD screen. However, it looks best…
... Pin 8 on the TEA2000, I separate the Luminance from the signal ... -
+2 (Grey) S-video?I have a pretty good Composite/S-video to VGA adapter that does a nice work of running my retro machines on an old LCD screen. However, it looks best…
... pin 8 LUMI (luminance input) of the TEA2000 as around 2.35V ... to pin 7 LUMO (luminance output) of the TEA2000. Then a 3K3 ... TEA2000 biased at the old black level.
For the luminance ... pin 7 LUMO of the TEA2000.
These two signals ... -
+2 (Grey) S-video?I have a pretty good Composite/S-video to VGA adapter that does a nice work of running my retro machines on an old LCD screen. However, it looks best…
... mention, I put the new luminance signal on pin 5 of ... is on pin 1 and luminance is on pin 5, thus ... buffer amplifier circuit for the luminance signal and the other is ... to pull the luminance input pin 8 of the TEA2000 up to ... -
+2A/+3 composite modHi, Anyone has experience doing a composite output mod for +2A/+3? (yes.. I also have a working RGB) A while ago I did one based on the instruction…
... of the basic TEA2000 circuit because there is no luminance delay line ... so the chrominance and luminance signals are not aligned, and ... -
+2A/+3 composite modHi, Anyone has experience doing a composite output mod for +2A/+3? (yes.. I also have a working RGB) A while ago I did one based on the instruction…
... of the luminance output is fed back into the TEA2000 chip, ... />
To make separate luminance and chrominance signals, I removed ... worked but the balance of luminance and chrominance wasn't ... inside the TEA2000. In the new circuit the luminance output is ... -
Graphics: What is the point of ...... actually, let me apologize for such a stupid vague thread title, I so wanted to avoid this but the whole sentence I wanted to write is just way t…
... with poor filtering in the TEA2000 circuit. There's a tuned ... error between the chrominance and luminance signals. I've still never ... -
Video on single transistor composite video modification for 48K SpectrumsI made a video on the single transistor composite video mod, using an Issue two Spectrum although it applies to all issues. Much better than the sing…
... combining of black and white (luminance) information and colour (chrominance) information ... of reducing luminance and chrominance interference on the 128K TEA2000 circuit. Similar ... -
Video on single transistor composite video modification for 48K SpectrumsI made a video on the single transistor composite video mod, using an Issue two Spectrum although it applies to all issues. Much better than the sing…
... combining of black and white (luminance) information and colour (chrominance) information ... of reducing luminance and chrominance interference on the 128K TEA2000 circuit. Similar ... -
New video about S-video modification on Issue two 48K Spectrum.I just finished an s-video modification on an Issue two 48K Spectrum so I made a video about it. Most of the technical details are in the video; if y…
... connection and toasted my second TEA2000 so that was the point ... composite video output by the TEA2000 encoder IC which doesn't ... only (and you get the luminance from the luma out obviously ... -
New video about S-video modification on Issue two 48K Spectrum.I just finished an s-video modification on an Issue two 48K Spectrum so I made a video about it. Most of the technical details are in the video; if y…
... of reducing luminance and chrominance interference on the 128K TEA2000 circuit. Similar ... , like we did with the TEA2000. Wich are the ways to ... -
New video about S-video modification on Issue two 48K Spectrum.I just finished an s-video modification on an Issue two 48K Spectrum so I made a video about it. Most of the technical details are in the video; if y…
... because the output of the luminance amplifier is already mixed ... br />
On the TEA2000, the luminance is output from LUMO and ... which amplifies and inverts the luminance signal. Mixed in with ... signal, notch filter the luminance and add in the chrominance ... -
Some downloads fail meI want download the schema of the Spectrum +2A and I can not because appears a user and password request in all links of "SCHEMATICS, MANUALS AND TEC…
I understand, the sound is mixed with the luminance signal and into of TEA2000 with the croma -
Some downloads fail meI want download the schema of the Spectrum +2A and I can not because appears a user and password request in all links of "SCHEMATICS, MANUALS AND TEC…
Correct, the TEA2000 generates a luminance signal on pin 7 which is fed back into its luminance input pin 8. The FM audio subcarrier is mixed onto that luminance signal and the TEA2000 mixes the chrominance subcarrier to the result. :) -
So for my first trick...I'm sure people have already used the AD724 or AD725 on other 8 bit machines, and i know the Harlequin uses the 724, but not seen anyone trying to us…
... 've already added a luminance filter to the TEA2000, 10uH + 100pF which ... luma/chroma timing, which the TEA2000 does not, and the Spectrum ... only use 12V for the TEA2000 and the RS232 port. The ... -
So for my first trick...I'm sure people have already used the AD724 or AD725 on other 8 bit machines, and i know the Harlequin uses the 724, but not seen anyone trying to us…
For the luminance filter at the TEA2000 a combination with a higher ... a working TEA2000 in the +2 but add a luminance filter and ... remove the sound carrier from luminance.
Greetings Ingo ... -
Spectrum +2 grey RF removalHi everyone. If I were to remove RF output from a +2, just intending to keep Composite video out from TEA2000, then all the components that make t…
... the longer legs to provide Luminance output directly without passing through ... yellow wire link for routing Luminance.
[URL=http://s1063 ... place from C31 right pad (TEA2000 pin 8) to R5 lower ... to D5 (which comes from TEA2000 pin 6 and goes to ... -
What mods do you recommend for a +2aHello all, I have recently got a +2a, that is running nicely. I'm thinking of modding it. I have read that the +3e rom is a good option. what else…
The TEA2000 generates the composite signal (CVBS) ... a TV directly from the TEA2000 but they are rather delicate ... 's best not).
The luminance filter mod is completely separate ... -
Nasty vertical pattern on a 128K Toast Rack via RGBI managed to fix the busted membrane on my [url="https://www.worldofspectrum.org/forums/discussion/55755/got-myself-a-128k-toast-rack-plus-a-simple-a…
... filtering circuit to the luminance signal of the TEA2000 chip. The color ... -
Nasty vertical pattern on a 128K Toast Rack via RGBI managed to fix the busted membrane on my [url="https://www.worldofspectrum.org/forums/discussion/55755/got-myself-a-128k-toast-rack-plus-a-simple-a…
... resonance filter to the luminance signal on the TEA2000, as I’m ... -
Nasty vertical pattern on a 128K Toast Rack via RGBI managed to fix the busted membrane on my [url="https://www.worldofspectrum.org/forums/discussion/55755/got-myself-a-128k-toast-rack-plus-a-simple-a…
... resonance filter to the luminance signal on the TEA2000, as I’m ... -
Nasty vertical pattern on a 128K Toast Rack via RGBI managed to fix the busted membrane on my [url="https://www.worldofspectrum.org/forums/discussion/55755/got-myself-a-128k-toast-rack-plus-a-simple-a…
... resonance filter to the luminance signal on the TEA2000, as I’m ... -
ZEsarUX 6.1 BETAHi I have uploaded a new ZEsarUX BETA version 6.1. You can download it from the usual beta url: https://sourceforge.net/projects/zesarux/files/…
... 128/+2/+3
TEA2000 colours - these are the 15 ... that result from sending a TEA2000 composite video encoder the bit ... Spectrum 48K ULA, the luminance staircase on the Y output ... change the magnitude of the luminance signal by controlling a transistor ...

