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31
Interface / Re: Internal memory expansion
« Last post by Wolfgang on 2020.September.16. 08:10:41 »
The TracoPower can be installed(TSR 1-2450, or even better the 2 Amp TSR 2-2450), I did it on one of my EPs, but some bending has to be done on its little pins.
This worked for me with the front regulator, but not for the rear one. The space between the power connector and the cooler was too small to get the Traco in. May this is only be an ISSUE 4 problem?
32
Interface / Re: Internal memory expansion
« Last post by gflorez on 2020.September.16. 03:41:25 »
The TracoPower can be installed(TSR 1-2450, or even better the 2 Amp TSR 2-2450), I did it on one of my EPs, but some bending has to be done on its little pins.
33
Interface / Re: Internal memory expansion
« Last post by Wolfgang on 2020.September.15. 21:38:12 »
That's a neat little replacement for the 7805! :)

Why did you make the change? Were you having problems with your EP64?

It is more of a habit. I usually replace every 7805 in old computers either with the OKI-78SR or the TSR 1-2450 in order to reduce the heat. I generally prefer the TSR 1-2450, but they don't fit in the EP without removing the cooler and that would leave an ugly hole.
34
Hardware / Noise on RGB signal. Suggestions?
« Last post by John Fante on 2020.September.15. 21:18:39 »
I managed to recap my "new" Egyptian EP and update to EXOS 2.4 :)

The machine works but I still have a strange noise problem on the RGB signal. See here.

Any suggestions how to find the source for that?

As far as I can see the components are fine but maybe something "broke" when I turned it on the fist time?

At first boot the machine was dead. Red LED on but no picture. With the help from this thread i managed to get it going.

The 5V rail was fine but 12V was way too low which cause the TR2 to fry (maybe killed by a bad C9). I replaced TR2 and C9 and the machine came to life :) But now I have a noise problem (see video).

To cure that I then recapped the board (took a while :) ). That is finished now but the noise is still there.

Any suggestions to where I should start looking for the error?
35
Interface / Re: Internal memory expansion
« Last post by elmer on 2020.September.15. 21:01:03 »
I also replaced the 7805s with OKI-78SR; quite the difference now......

That's a neat little replacement for the 7805! :)

Why did you make the change? Were you having problems with your EP64?
36
Hardware / RF signal only black&white
« Last post by Wolfgang on 2020.September.15. 16:43:43 »
While I get a good quality color picture on scart, I am unable to see color with my rf modulator. I already replaced LM1886, LM1889, TR6, C38,C39,C36 without any success. What else could be wrong?
37
Weboldalak / Re: EP128.hu
« Last post by szipucsu on 2020.September.15. 11:41:03 »
Lehetne Zzzip programcsokor is külön. Kicsit fura a basic programcsokron belül a zzzippelt programok, meg a normál játékok között is akad belőlük elszórva. Maga a basic programcsokor is jól meghízott, lehetne talán más elrendezéssel is, néhány ismertető jó hosszú a sok rövid ismertető között.
38
Weboldalak / Re: EP128.hu
« Last post by Tutus on 2020.September.15. 11:22:07 »
Lehetne pl. egy külön IS-DOS programcsokor, de oda mehetne minden más is, ami IS-DOS alatt fut, nem csak a játékok.
Az Enterprise World oldalon ez már megoldva :)
https://enterprise-world.net
Rögtön hozzáteszem, amit eddig is mondtam: NEM Lacika vetélytársa akarunk lenni az oldallal...
Úgy érzem, hogy a nagyon fontos programok felkerültek / felkerülnek hozzánk.
Játékok nem (kivétel ez alól az IS-DOS játékok).
Még rengeteg munkánk van az oldallal :)
39
Interface / Re: Internal memory expansion
« Last post by Wolfgang on 2020.September.14. 18:25:43 »
I removed the header. Now I can close it properly. :)
I also replaced the 7805s with OKI-78SR; quite the difference now......
40
Interface / Re: Creating EXDOS card clone
« Last post by pear on 2020.September.14. 17:03:01 »
I ordered 15 pieces. We'll see what comes out.
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