Help identifying an Apple ][

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Help identifying an Apple ][

I have tried to understand what model of Apple ][ this is. I asked in some groups on FB and i got a lot of people saying it's definitley a ][+ and equally many saying its definitley a ][.

How to tell?

I put an album up on https://imgur.com/a/etoKXrn

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well its definitely a II

well its definitely a II keyboard and top cover. The PSU looks like a II. And its a REV 3 or 4 board (II) but the baseplate SN is for a II plus. I dont know why anyone would change it. There are lots of people making II's from other parts (frankentstein systems). My guess is they took a chassis and baseplate of a II plus and put a II motherboard in it and bought a new cover and keyboard.

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it's... franklinsteen!

This looks like someone pieced together a machine with parts from varies vintage.

Green label only started with II+. Logic board is a rev 4 mid-79, matches introduction date for II+.

Raised keyboard power light were last used in red label II that were produced in parallel with early II+.

Can't tell if there's an encoder board or not. There's also that PAL video card that probably came from an Europlus.

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This is the pre-Europlus

This is the pre-Europlus Apple II PAL system, the Apple II Euromod. 

 

The comments about it being assembled from parts are simply wrong, and most people do not know about this model. The earliest PAL systems (look at the low serial number), after the ITT2020, were A2S2s with a standard Apple II badge and modified Rev 03-04 boards, from 1979. This system is precisely as it came from the importer and s absolutely not a ][+ base with the wrong top. 

 

The keyboard here is a Datanetics Mk II. You ay have a lot of issues reviving it. If you need help, I have restored these in the past.

 

It is a time consuming and costly procedure. NEVER attempt to wash a Datanetics board as people do with later KBs, e.g. in a dishwasher. Doing that will utterly destroy it. That power lamp is the Unicorn horn type, same as my original ][. This is the correct KB for Rev 4 and earlier systems, with specific serial number ranges. As far as I can tell, 1979 was the last year when it was used, from surplus stock. 

 

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This is some interesting

This is some interesting information!

So it IS an Apple II you say? But why would it then have a 115v psu?

I haven't started it as I don't know for how long it's been off. I want to be careful to not destroy it. I suppose that I need to get a 230 to 115 v converter to start with. I can plug it in to an old TV if I find one and then search for the frequency where it outputs video.But where should I plug in the tv? Apart from the vide output on the board I see three extra inside.

 

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fabianmossberg wrote:This is
fabianmossberg wrote:

This is some interesting information!

So it IS an Apple II you say? But why would it then have a 115v psu?

I haven't started it as I don't know for how long it's been off. I want to be careful to not destroy it. I suppose that I need to get a 230 to 115 v converter to start with. I can plug it in to an old TV if I find one and then search for the frequency where it outputs video.

 The device on the left with two rca jacks is the RF Modulator. If you are using a composite monitor remove it. The middle device I am not sure, could very well be a sound device. Wtihout seeing the board I cant tell.

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Verault wrote:The device on
Verault wrote:
The device on the left with two rca jacks is the RF Modulator. If you are using a composite monitor remove it. The middle device I am not sure, could very well be a sound device. Wtihout seeing the board I cant tell.

 

I have never seen a RF modulator with two jacks before. I suspect the jack facing the back is an input for composite, and the jack attached to the box pointing up is RF out.

 

 

The expansion card you can see in the pictures in the first post. It's a Euro Color Encoder.  I know nothing about this, but I'd guess the jack on the expansion card needs a short patch cable from it to the jack on the small RF board facing the back to feed the signal to the modulator. Then your RF comes out the top. 

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nick3092 wrote:Verault wrote
nick3092 wrote:
Verault wrote:
The device on the left with two rca jacks is the RF Modulator. If you are using a composite monitor remove it. The middle device I am not sure, could very well be a sound device. Wtihout seeing the board I cant tell.

 

I have never seen a RF modulator with two jacks before. I suspect the jack facing the b

 

 

 

What are you talking about? These are Bog Standard RF modulators for the Apple II!  I have seen dozens of them.. All the same in design.. Here are two from a pile right here on my bench.

 

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Verault wrote:nick3092 wrote
Verault wrote:
nick3092 wrote:
Verault wrote:
The device on the left with two rca jacks is the RF Modulator. If you are using a composite monitor remove it. The middle device I am not sure, could very well be a sound device. Wtihout seeing the board I cant tell.

 

I have never seen a RF modulator with two j

 

I meant I have never seen a modulator (which to me is only the metal box, not the full board)  with more than one jack.

 

But my experience with RF modulators is limited to video game consoles (where the box is soldered directly into the PCB) and my //c where it mounts on a DB connector. In old consoles they typically all required 4 connections: Vcc, audio, video, and channel select. And none of them were a jack. 

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nick3092 wrote:Verault wrote
nick3092 wrote:
Verault wrote:
nick3092 wrote:
Verault wrote:
The device on the left with two rca jacks is the RF Modulator. If you are using a composite monitor remove it. The middle device I am not sure, could very well be a sound device. Wtihout seeing the board I cant tell.

 

 

These are the standard for the Apple ][. One fack is R out, the other is composite. The video is pulled from the four pin header on the ][ mainboard. 

 

Video game consoles and other computers had them built into the hardware. On the ][, they are an accessory.

 

I really have no clue why they have a second RF out, other than to calibrate them. 

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Apple II Plus modified for

Apple II Plus modified for Europe use.

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drakepirate wrote:Apple II
drakepirate wrote:

Apple II Plus modified for Europe use.

That is precisely what the Euromod is. It is a legitimate model produced by importers ere the Europlus weas introduced. 

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About the 115/230V - see the

About the 115/230V - see the powersupply, there's the small cover on top left - you can remove, under it there's swtich for 115 or 230V so you can choose the correct voltage. 

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