This is topic Eumig Sonomatic Bulb Change in forum 8mm Forum at 8mm Forum.

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Posted by Paul Adsett (Member # 25) on April 22, 2019, 12:20 PM:
I tried to replace the bulb in my Eumig 824 Sonomatic and there was simply no way to do it, just not enough room to pull the lamp connector off! So I had to unscrew the Sonomatic assembly and move it out of the way so I could pull the lamp connector off the bulb and nount the new bulb. I can't believe that Eumig intended bulb replacement to require disassembly of the Sonomatic device, but I can see no other way to replace the bulb. What am I missing here?

Posted by Steve Klare (Member # 12) on April 22, 2019, 12:48 PM:
I bet this is the machine you bought at CineSea, Paul!

-And when I replaced the lamp connectors there, I noticed how thick the new one was, but it was too late to get another one so I finished the job.

I was able to mount the lamp without removing anything else.

Maybe you need to find a thinner socket. This one was recommended for electrical durability, but maybe that came at the cost of being big!
Posted by Paul Adsett (Member # 25) on April 22, 2019, 01:13 PM:
Right on Steve! Yes this is the 824 that I purchased from Gary Crawford at the 2015 Cinesea, can't believe 4 years have gone by so fast. Anyway it's a beautiful machine with great sound and picture and I love the look of it, a most elegant Eumig and now my favourate 800 . You may be right about the connector Steve if its not OEM, but if that's the problem then the OEM connector must have been MUCH thinner. It really is a very tight fit in there.
But I do like your larger connector, if it is more durable. Most of the halogen connectors for MR16 base lamps seem to be really crappy quality, I seem to always be replacing them.

Posted by Graham Ritchie (Member # 559) on April 22, 2019, 01:49 PM:
Hi Paul

That's interesting I just checked Steven old 820 that I have been fixing up of late,

I had no problems removing the lamp and its socket together. It does appear to be plenty length of cable to remove the whole thing. I wonder what the difference is between the 820 and the 824 that's causing that problem?...I removed and re-fitted the lamp a few minutes ago here are a couple of photos...
Posted by Paul Adsett (Member # 25) on April 22, 2019, 02:13 PM:
Hi Graham, and thanks for checking your 820. I think the only difference must be the lamp connector that Steve installed at Cinesea, it measures 0.410 ins thick. Could you measure the thickness of the connector in your 820?
Posted by Graham Ritchie (Member # 559) on April 22, 2019, 02:27 PM:

Just measured its exactly 0.315in

PS. Had another closer look, anything thicker than that and you wont get it out.
Posted by Paul Adsett (Member # 25) on April 22, 2019, 02:36 PM:
Thanks Graham, so that 0.315 is the maximum thickness for any new replacement connectors. Good reference info.
Posted by Graham Ritchie (Member # 559) on April 22, 2019, 02:42 PM:
Your welcome Paul

But that brings up the question, how did Steve get it in? [Roll Eyes] [Smile]
Posted by Luigi Castellitto (Member # 3759) on April 22, 2019, 03:40 PM:
My Eumig 822 Sonomatic. [Smile]
The socket measures 8 millimeters, I can change the lamp easily, the cable is quite long as Graham says.

Posted by Steve Klare (Member # 12) on April 23, 2019, 10:17 PM:
I remember the clearances being tight, yet not impossible. I was able to mount the new bulb without removing anything else, although there wasn't clearance to spare.

I dunno! As usual it was Wildwood day...

-Maybe between there and sunny Florida there was just enough thermal expansion! [Wink]


Claus Harding Photo at CineSea XI
Posted by Paul Adsett (Member # 25) on April 23, 2019, 10:30 PM:
Is that a crowbar I see off to Steve's right? [Big Grin]
Posted by Steve Klare (Member # 12) on April 23, 2019, 10:38 PM:
Pageant! Kodak! [Big Grin]

The other thing is a very nice wood-handled screwdriver I have: won't stick to your hands when those Wildwood Winds blow! [Wink]

What was funny was Gary was concerned about me working in that cool room. A couple of years earlier I'd replaced a starter on my car laying on the ground when there was snow outside.

-compared to that scenario this was like an afternoon in a hammock!

I still have two of those connectors: guess I should use them in some other machine than my own Eumig!


We owe credit to the Maintenance Staff of the Ocean Holiday Motor Inn here: you see, I forgot to bring electrical tape with me...
Posted by Maurice Leakey (Member # 916) on April 24, 2019, 05:10 AM:
I have a pristine 824 complete in its original box with all accessories and paperwork. I suggest that everything is original.
Just measured the depth of the lamp-holder. It's 8mm.
The available space from the rear of the lamp-holder is also 8mm.
Posted by Graham Ritchie (Member # 559) on April 24, 2019, 05:30 AM:

Don't forget that in the "US" they are still using the old imperial [Smile] they never changed to metric.

8mm=0.31496063.....better just to say 0.315inch.

Apart from the US does anyone still use it? [Smile]
Posted by Maurice Leakey (Member # 916) on April 24, 2019, 06:26 AM:
I am sure that everybody knows what 8mm looks like. And it's much easier to measure. [Big Grin]
Posted by Leon Norris (Member # 3151) on April 24, 2019, 07:19 AM:
Paul, you have a nice looking machine! I heard its the best of the 800 series? Leon.
Posted by Maurice Leakey (Member # 916) on April 24, 2019, 08:31 AM:
Agreed. It even has a two position lamp switch and a tone control.
Posted by Paul Adsett (Member # 25) on April 24, 2019, 09:15 AM:
Yes it's a beautiful machine Leon, classic robust Eumig 800 series design. And Gary gave me a great price on it too. An example of the bargains that can be obtained at Cinesea.
Posted by Stuart Reid (Member # 1460) on April 25, 2019, 08:24 AM:
I've just acquired an 824, needs a little love and care but they're gorgeous looking machines.
Posted by David Skillern (Member # 607) on April 26, 2019, 04:36 PM:

Best wishes from South Wales - I have two 824 sonomatics and to change the bulb on both all I have to do is unclip the retaining clips and move them to one side and the lamp holding becomes free and i just pull out the dead lamp and replace and reposition the new lamp once connected and put the retaining clips back in place
Posted by Maurice Leakey (Member # 916) on April 28, 2019, 02:26 AM:
That's because you have an 824 which has the correct lamp holder. As mentioned previously, Paul's projector did not.
Posted by David Skillern (Member # 607) on April 28, 2019, 04:29 AM:
Thankyou Maurice,

I must have skipped that particular piece of information.

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