Posts: 1423
From: Weymouth,Dorset,England
Registered: Oct 2012
posted May 17, 2015 02:19 PM
By a stroke of luck I have today obtained one in very good condition and amazingly in working order. Having said that the sound reproduction is barely audible, which is to be expected after all this time. The problem I have is that the lamp is blown, which I thought wouldn't be a problem to replace, but it seems that it is! The old lamp is a Phillips a 125v 750w and marked 207 and with the usual two flanges. I have plenty of these type of lamps but I can't get them to fit. Does the Pageant take a special type of lamp?
Posts: 5895
From: Bristol. United Kingdom
Registered: Oct 2007
posted May 17, 2015 03:02 PM
Terry There were many variants of Kodak Pageants, and you don't say what model you have. I have the European export model of the AV-12M6-L (Optical/Magnetic replay & record) which is for 240 volt mains and its projection lamp is the standard pre-focus A1/9 240v 750w. The exciter lamp is a G/40 6v 1a. If you go to Dons Bulbs you can glean a lot if you insert "Pageant" in the equipment search (second one down.) http://www.donsbulbs.com/cgi-bin/r/t.pl
Posts: 1423
From: Weymouth,Dorset,England
Registered: Oct 2012
posted May 18, 2015 02:33 AM
Elyas That's a very kind offer. I assume you mean the bulb? If so I would be most grateful. Please let me know any cost and a means to pay (perhaps PayPal?) Kind Regards Terry
Maurice I wasn't aware that there were many variations and I don't know as yet which one I have, other than it is optical only and 110v. I will have a look and see if I can find the model number. Thanks for the advise. Best Terry
Posts: 1423
From: Weymouth,Dorset,England
Registered: Oct 2012
posted May 18, 2015 08:43 AM
Ellyas Thank you again for your kind offer but I have now found a lamp that fits. I think that the lamp holder is a little corroded with age and was making the fitting difficult. Problem now sorted and working fine. I still have the problem of very low sound but it is difficult to find local people with the knowledge and skill to rectify valve amplifier faults. Sadly I may just have to pass this one on.
Maurice The model is 7K2 from 1958. Saw one on YouTube exactly the same.
Posts: 5895
From: Bristol. United Kingdom
Registered: Oct 2007
posted May 18, 2015 09:00 AM
I see from YouTube that the 7K2 has a volume control for a microphone, before you give up try a microphone. It could be just dirty optics causing low sound. A microphone test could prove that the amp works OK.
Posts: 1423
From: Weymouth,Dorset,England
Registered: Oct 2012
posted May 18, 2015 02:02 PM
Maurice Yes I tried that and also tried the scanning adjustment but no difference really. I also had a look at the PEC which looks almost new, no burn marks on the light sensitive panel, so it looks like an amplifier fault. Unfortunately the microphone doesn't work. There seems plenty of volume (hiss & hum) when not running film but the signal from the optical track is not being amplified sufficiently apparently. Listening to the experienced forum members who have encountered this same problem it seems that the amplifier needs capacitors and resistors replacing. I wish I knew someone who would take on that job.
Posts: 5895
From: Bristol. United Kingdom
Registered: Oct 2007
posted May 18, 2015 02:51 PM
Terry Check out the website of a Weymouth gentleman who seems able to check out valve amplifiers. http://www.jonsnell.co.uk/aboutme.htm
Posts: 540
From: Aldershot, Hampshire, UK
Registered: Nov 2013
posted May 19, 2015 03:58 AM
Terry,
While a rebuild of the valve amp is obviously the best option, it may be easier getting an engineer to replace the amp with a modern transistorised one. These are cheap enough even with a new power supply - use batteries if you have to - the main difficulty would be installing a photo diode to replace the PEC.
Posts: 1423
From: Weymouth,Dorset,England
Registered: Oct 2012
posted May 19, 2015 05:11 AM
Paul It's obtaining suitable photo diodes that have put me off going down that path, also I prefer to keep things original.
MAURICE You've done it again! I contacted Jon Snell and have given him the amp to look at. If what he tells me about his qualifications is true then he is just the repair wizard I have been looking for. If he does a good job I will get him to look at my RCA Hollywood, Ampro Stylist and my beloved Debrie, which has started having crackles and hissy fits (must be female). Thank you for your help and I will keep you updated on the progress.
Posts: 540
From: Aldershot, Hampshire, UK
Registered: Nov 2013
posted May 19, 2015 06:01 AM
Terry, Good luck and keep us posted on your progress. Regarding the photo diodes, photo transistors can be used as well. However like you I would also prefer to see the original valve amplifier in use.
Posts: 1423
From: Weymouth,Dorset,England
Registered: Oct 2012
posted May 19, 2015 08:06 AM
Thanks Elyas With regard to the lamp I still find it very difficult to fit and remove it, so I guess the lamp holder is a bit dodgy, although I can't see any visible defect. It won't be my favoured projector of use so I'm hoping not to change it again for a while.
Elyas as you have a Pageant 7k2 perhaps you could help me with another matter. Because of the very low sound I am wondering whether the incorrect exciter lamp is fitted. Can you tell me which type it should be? The one fitted is a 7volt 0.2amp double contact with horizontal filament. Is that what you have?
[ May 19, 2015, 12:13 PM: Message edited by: Terry Sills ]
Posts: 520
From: Winnipeg, Manitoba, Canada
Registered: Nov 2012
posted May 19, 2015 04:35 PM
Hello again Terry,
I had a Pageant 126 AVTR but I'm assuming it might just be a North American variant of the same model as yours? I have passed on said beast to my neighbor during Spring cleaning and don't have him anymore ... Nonetheless, I do have an exciter lamp lying around and it says "BRK 4V, 0.75 Amp". I do second your point on removal and replacement of these exciter lamps. Till I got the hang of it, the base did prove user unfriendly ... Hope that helps and please lemme know if you have any more questions and talk soon !!!
Posts: 1061
From: Burnsville, MN, USA
Registered: Dec 2009
posted May 19, 2015 07:55 PM
My 7K4 has a release lever on the exciter socket. If yours has that lever, are you flipping it up? It is easy to remove the lamp once that is done.
Posts: 1423
From: Weymouth,Dorset,England
Registered: Oct 2012
posted May 20, 2015 12:46 AM
Hello Barry Unfortunately the 7k2 doesn't have a release lever. What exciter lamp does yours take. Is it a double contact base?
Posts: 1423
From: Weymouth,Dorset,England
Registered: Oct 2012
posted May 20, 2015 04:15 AM
Yes Maurice that's the one. I just wonder whether it's the correct one for the 7k2. I can't find any info on the net but I have messaged Martyn Stevens in the hope that he has some reference.
Posts: 5895
From: Bristol. United Kingdom
Registered: Oct 2007
posted May 20, 2015 05:52 AM
Terry According to Donsbulbs.com a few Eastman Kodak Pageants used the BTD exciter lamp, although the model 7K2 is not listed. However, there seems no reason that the lamp fitted in your new Pageant is incorrect.
Posts: 1423
From: Weymouth,Dorset,England
Registered: Oct 2012
posted May 20, 2015 06:09 AM
Thanks Maurice You're probably right. It's just that because the sound level is so low that I figured that, if it is the wrong lamp, it would be a contributing factor.
Posts: 1423
From: Weymouth,Dorset,England
Registered: Oct 2012
posted May 28, 2015 01:49 AM
The amplifier has been repaired but the problem persists. Have checked the pec which is ok but the voltage to it is 45v. Does anyone know whether this is th correct voltage to activate the pec? I thought pec's worked on 100 volts? Perhaps this is the reason for low sound. Does anyone know?
Posts: 540
From: Aldershot, Hampshire, UK
Registered: Nov 2013
posted May 28, 2015 03:24 AM
Terry, The PECs used in the Bell & Howell amps of the 50s required 90V polarising voltage, so I think you are probably correct.
Posts: 5895
From: Bristol. United Kingdom
Registered: Oct 2007
posted May 28, 2015 03:16 PM
Terry I found an interesting PDF with operating instructions for an early Kodak sound projector. It's not called a Pageant but you will find it interesting. Photocell voltage is quoted as 90 volts. I found it from a Google search under:- PDF - Kodak Sound Kodascope Projector FS-10-N-ApeCity.com
Posts: 1423
From: Weymouth,Dorset,England
Registered: Oct 2012
posted May 28, 2015 04:38 PM
Thanks Maurice Not the exact model but the principles are the same and it confirms that the pec voltage should be 90volts which would explain the very low sound. It is essentially the same same as a valve and requires the required voltage to operate efficiently, so to my mind this has to be the problem. If my presumptions are wrong please correct me before I explore this route ( anyone???)