The complete service manual only has 78 pages, so I don’t know where you are going with this thought?
As far as what I was saying (or perhaps you misunderstood what I was saying)- if you recreate the 75 ohm setup and connect to the pins as described and shown, it won’t matter what else is done on the daughterboard because you would be moving those 2 pins out of the socket connections.
The 75 ohm resistor should be present in the circuit, so you will have to look at the board / daughterboard to see if it exists / how it sits in the circuit in relation of the daughterboard layout etc.
Those two pins are clearly V+ (+5V) per the schematic. if you are not familiar with schematics / the circuitry, etc- then take it to a professional so you don’t burn it up.
At no point am I advising to remove the daughterboard from the configuration...
** DISCLAIMER - I am not liable for any actions you take which may damage your machine due to lack of technical ability, skill or knowledge in regards to repair. ****
Regards,
Ted Summers
Co-Moderator
On Aug 31, 2015, at 11:20 PM, 'synthwalker' synthwalker@... [emax] <emax@yahoogroups.com> wrote:
Thanks a lot, it surely brings some light...
But I still don’t know where to solder my blue cable on the daughter board.
I think my daughter board includes some fixes you’re talking about, so only removing pin 1&32 and soldering the wire should not work.
There are 2-3 different pins on the daughter board to which the blue wire could be connected, but which one ?
A picture from a original Emax SE rack could help, or the service manual page 78 and up (only have the first 78 pages).
Since this is the +5V, I don’t want to solder the wire to the wrong pin…
De : emax@yahoogroups.com <mailto:emax@yahoogroups.com> [mailto:emax@yahoogroups.com <mailto:emax@yahoogroups.com>]
Envoyé : mardi 1 septembre 2015 04:21
À : emax@yahoogroups.com <mailto:emax@yahoogroups.com>
Objet : Re: [emax] Emax SE rack needs help - lost blue wire to the E-chip
I made a post off the FAQ page with a pic.
https://djtbs1.wordpress.com/2015/08/31/emax-e-chip-power-connection/ <https://djtbs1.wordpress.com/2015/08/31/emax-e-chip-power-connection/>
Hopefully that is helpful for you…
-T
On Aug 31, 2015, at 2:25 PM, 'synthwalker' synthwalker@... <mailto:synthwalker@...> [emax] <emax@yahoogroups.com <mailto:emax@yahoogroups.com>> wrote:
Sorry group,
Here are the links to the pictures :
- PC333 Rev A general view : http://img.audiofanzine.com/image.php?lang=fr&identifier=image&size=normal&module=user&userPhoto_id=286238 <http://img.audiofanzine.com/image.php?lang=fr&identifier=image&size=normal&module=user&userPhoto_id=286238>
- E-Chip Rev B daughter board : http://img.audiofanzine.com/image.php?lang=fr&identifier=image&size=normal&module=user&userPhoto_id=286239 <http://img.audiofanzine.com/image.php?lang=fr&identifier=image&size=normal&module=user&userPhoto_id=286239>
- De-soldered blue wire side (E-Chip daughter board) : http://img.audiofanzine.com/image.php?lang=fr&identifier=image&size=normal&module=user&userPhoto_id=286240 <http://img.audiofanzine.com/image.php?lang=fr&identifier=image&size=normal&module=user&userPhoto_id=286240>
- Soldered side of the wire to R19 (PC333 board) : http://img.audiofanzine.com/image.php?lang=fr&identifier=image&size=normal&module=user&userPhoto_id=286241 <http://img.audiofanzine.com/image.php?lang=fr&identifier=image&size=normal&module=user&userPhoto_id=286241>
Regards,
Eric
De : emax@yahoogroups.com <mailto:emax@yahoogroups.com> [mailto:emax@yahoogroups.com <mailto:emax@yahoogroups.com>]
Envoyé : lundi 31 août 2015 22:40
À : emax@yahoogroups.com <mailto:emax@yahoogroups.com> [emax]
Objet : Re: [emax] Emax SE rack needs help - lost blue wire to the E-chip
Eric-
you can't send pics directly to the group.
If you post the links somewhere (hosting, instagram, etc), then send us the links we can review the pics....
I believe you are talking about a wire for voltage regulation of the E-chip- but again- would have to see the pics to confirm it.
-T
Co-Moderator
On Mon, Aug 31, 2015 at 1:32 PM, 'synthwalker' synthwalker@... <mailto:synthwalker@...> [emax] <emax@yahoogroups.com <mailto:emax@yahoogroups.com>> wrote:
Dear Emax Group,
I have an Emax SE rack with late PC333 Rev A board (see pic 001) with E-chip
Rev B mounted on a daughter board (see pic 002).
A blue wire is (was) connected between this daughter board (pic 003) and the
mother board, from the R19 resistor external side (004).
This wire has been de-soldered from the daughter board but I don't know
where it was soldered (amongst the 4 most left pins nearby...).
I did not find any service manual or picture with this configuration (found
some with wire between E-chip pin 1 and 32, but no R19 resistor).
Can anyone help with a picture or schematics ?
Many thanks,
Eric
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