+2 gray external sound source socket
Hello
I'm repairing an old +2 grey that was given to me, it was in a terrible state (damaged and in pieces).
I've managed to repair the board using some memory chips i bought from sintech and i've cleaned the casing plastics and keyboard as much as i could (total dissasembly and washing), they looked as if they were stored in a pigsty for years. Unfortunately the datacorder's plastic cover (that comes out when you press eject) is missing and the pause button doesn't work (a plastic piece and a small spring is missing).
The Datacorder was modified in order to recieve external sound source, two sockets were installed on the side. I would gladly remove them but they're going to leave two drilled holes behind (on the plastic casing) , so i decided to keep them.
As i said, the machine was in pieces so some wires that were soldered on the datacorder's board are ripped and i can't make out where they used to be soldered.
I can use another +2 grey i have as a guide for the standard wires but i don't have a clue where the wires for the extarnal sound source sockets should go.
I searched on the web for info but all i could find was a page in Chech (i think) and not very clear as to what i should do.
http://cygnus.speccy.cz/popis_spectrum128plus2_mgf.php
Can someone here provide a link or schematics for external sound source sockets installation on a +2 grey please?
I'm repairing an old +2 grey that was given to me, it was in a terrible state (damaged and in pieces).
I've managed to repair the board using some memory chips i bought from sintech and i've cleaned the casing plastics and keyboard as much as i could (total dissasembly and washing), they looked as if they were stored in a pigsty for years. Unfortunately the datacorder's plastic cover (that comes out when you press eject) is missing and the pause button doesn't work (a plastic piece and a small spring is missing).
The Datacorder was modified in order to recieve external sound source, two sockets were installed on the side. I would gladly remove them but they're going to leave two drilled holes behind (on the plastic casing) , so i decided to keep them.
As i said, the machine was in pieces so some wires that were soldered on the datacorder's board are ripped and i can't make out where they used to be soldered.
I can use another +2 grey i have as a guide for the standard wires but i don't have a clue where the wires for the extarnal sound source sockets should go.
I searched on the web for info but all i could find was a page in Chech (i think) and not very clear as to what i should do.
http://cygnus.speccy.cz/popis_spectrum128plus2_mgf.php
Can someone here provide a link or schematics for external sound source sockets installation on a +2 grey please?
Post edited by gtsamour on
Comments
ftp://ftp.worldofspectrum.org/pub/sinclair/technical-docs/ZXSpectrum128+2a-+3_Schematics.zip
If you could photograph the board, prefferably scan it, I will be glad to show you where to attach the wires.
The best way I can describe it, is that there is a plug socket soldered to the board where the original tape deck went. This is a good place to attach your wires to. The PLAY is audio in, the REC is audio out and then assuming you've used screened cable, attach the braids to ground. DO NOT MIX THEM UP - if you put your audio signal down the play line or visa versa, you will fry the ULA - it's a well documented fact.
I suggest you use different sized sockets to maintain polarity integrity.
The guy has added a few yellow wires which were not originally there but never mind.
Could you please get that picture and mark where i should attach the wires and then post a link for it? Pleeeeeeease.....
http://cygnus.speccy.cz/popis_spectrum128plus2_mgf.php
I've also read somewhere that there is grave danger of damaging the ula if you try to load using the socket for recording. I'll plug it shut with something so there won't be any accidents.
Those pics are unsuitable - I'll draw it out with Paintshop and upload it to my site. Shouldn't take long :)
I was under the impression that a +2A and +2B already had a sound input socket by design
The +2B and +3 has a 3,5 mm stereo jack socket, where sound input are connected to the sleeve (right channel), while the sound output is connected to the tip (left).