Author
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Topic: The hard work of Mr. Faulkner (a tribute to Kevin)
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Ugo Grassi
Jedi Master Film Handler
Posts: 506
From: Avellino (Italy)
Registered: Dec 2003
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posted October 20, 2007 05:10 AM
Dear friends,like tale, I want let you know some technical features of the Elmo Xenon, and, expecially, how much Kevin Faulkner was nice, kind, lovely… GREAT! Three years ago I bought on ebay an Elmo GS1200 Xenon. It appeared in good state. And infact when I received it the look was nice, but inside… oh! Totally worn out the lamp, the cam shaft (!!), and the heads were not GS1200 genuine (were from a GS800). With many hours of job my Xenon became like new! Perfect picture steadiness, new lamp from Superior quartz (I have to open a thread about these very good new lamps), new and genuine heads! So until some weeks ago I thought to have a perfect Xenon machine. But a bad surprise around the corner was waiting for me… Two weeks ago my home cinema hall was completed! And with it the amplifier system was set up: a Denon amplifier with 5+1 B&W speakers (of course I’m using to connect the Elmo ext outputs to the amplifier. Oh, friends, it’s incredible the clear sound arrives from my GS1200!). The problems arrived when I connected the Xenon machine I’m talking about. The sound wasn’t good like the others GS. Not too much, but a little bit distorced! For example, in the dialogues, the “S” was dirty, like to have a fly in the speakers. So the machine came back on my surgeon’s table! And on that table I discovered a lot of hidden bugs in the electronic boards. At first, the STK was not that one for the Xenon version. Someone mounted the 439 instead of the 443. Note the STK439 is a 15+15 watts, and the 443 is 25+25. The halogen machine has the 439, and the Xenon has the 443. The rest of the main board was right for the Xenon series, but the STK was wrong. It means someone repaired the board with the wrong spare parts. At first I changed the wrong 439 with the 443, but the sound problem wasn’t fixed. So I went to give a look to the preamplifier. The surprise was it came from an halogen machine. It meant too much supply vultage arrived to it (the supply vultage on the boards is higher in the Xenon). How to resolve the problem? By sending an help request to Kevin!!! In the late afternoon I sent the mail to Kevin and in the late night I received a datasheet with a comparison of the different resistors in the Xenon and halogen preamplifiers!!! Kevin had made for me an incredible (and boring I fear) job! By the readingof the diagrams he identified the differences between the pre. By this job and by the replacement of the “wrong” resistors, the sound became better that the first tests. But yet not enough like the others machines. My final decision was to replace the whole main board! That’s because the capacitors of the main board were probably exhaust. It doesn’t mean the “old” main board will go to the garbage can. I’ll spend my next days to replace every capacitor on that board, so I’ll have a spare part like new. But due to the replacement of the board a new problem was born. I have some new boards like spare parts, and among that a new board for a 25+25 watts machine. That kind of board was on the Xenon and PCOM series, and, like spare part, it was sold in “default state”. It means without – for example – some extra capacitors soldering on the some IC. But the problem was that the board was able to work in a standard machine. And the heat filter is driven in different way in the halogen and in the Xenon projectors. Keeeevviiiinnnn help me again! And Kevin sent me a datasheet to explain how to configure the board for the Xenon series… How to say “THANK YOU KEVIN”? [ October 20, 2007, 10:24 AM: Message edited by: Ugo Grassi ]
-------------------- Bye Ugo
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