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Cursitor Doom <curd@notformail.com>: Jan 10 12:36AM Finally got around to taking the thing apart. There was a tiny almost invisible green-colored fibre no more than the thickness of a hair lodged between the '2' ferrite core and its coresponding capacitive film backing acetate pad. Had to examine it under a stereoscope to spot it it was that tiny. Brushed it away and the pad's working fine again. That 1/000" obstacle was the issue! Hopefully working again for another 25yrs now. Thanks, all.

amdx <nojunk@knology.net>: Jan 10 06:48AM -0600 On 12/29/2015 12:54 PM, Ian Field wrote: > permutation for the layout of the 3 pins - when I salvage them, I leave > them on the front panel PCB so I can trace the tracks and figure out > which pin does what.   Back in the olden days, I repaired VCRs. I built a remote tester using an end sensor from a VCR. It consisted of a 9v battery, end sensor, resistor, plastic box and a couple of outboard connections for the scope probe. Just point the remote at a hole in the plastic box and see the waveform on the scope. I fixed a lot of remotes at $29.50 each. The most memorable one was on a remote I didn't find a problem with. The customer picked it up and called from home saying it didn't work. I had recently read an article in a trade magazine about new fluorescent bulbs (CFL?) overloading the sensor in the VCR. I ask about lights, he said he had a new light, I said shut it off, the VCR remote worked properly with the light off. I suggested he move the light or build a shield between the light and the VCR sensor. I have a Sony remote that needs disassembly and pad cleaning, this may provide the incentive I needed. :-) Mikek

MJC <gravity@mjcoon.plus.com>: Jan 10 10:11AM In article <n3qge0$hc3$3@reader1.panix.com>, presence@MUNGEpanix.com says...   > > See https://picasaweb.google.com/111741851908838288378/CEDRICProject? > > authuser=0&feat=directlink   > Nice case. How old is that thing? What's inside?   Kind of you to take an interest! The whole project was carried out in 1964 (when I became 21). The neons were directly driven via a diode array which encoded from up to ten numeral lines per digit. But I don't remember whether we fitted all those diodes (I still have circuit diagrams squirreled away!) into the display box or whether the cable has 5x7x4 wires, one per neon. There was a much bigger box which held the rest of the circuitry and the large battery...   Mike.

Ivan Vegvary <ivanvegvary@gmail.com>: Jan 09 04:05PM -0800 I see that Manuals Plus is out of business. The alternative site that they reference (archive.org) is difficult to use, at least for me. (Already tried Google with no luck).   Any help obtaining a manual would be greatly appreciated. Not looking for a freebie, willing to pay.   Thank you, Ivan Vegvary

c4urs11 <c4urs11@domain.hidden>: Jan 10 02:27AM On Sat, 09 Jan 2016 16:05:37 -0800, Ivan Vegvary wrote:   > Any help obtaining a manual would be greatly appreciated. > Not looking for a freebie, willing to pay.   Found on eevblog this information from an ex-worker at Exact:   | Re: Old waveform generator EXACT electronics model 502 LCS & question. | | Actually, we made TWO of the Exact model 502 generators. | The first was around 1970. The second, which you have, was after | Jerry Foster sold Exact to Dynatech. | They were then relocated from Tillamook, Oregon to Nevada, and went | out of business a short time later. | | All analog Exact generators had the same basic circuitry; | opposing current sources would charge and then discharge a timing | capacitor. This would generate the triangle waveforem. | The comparator with hysteresis would also create the square wave. | The triangle wave was fed through an op-amp with three (four in our | high end generators) diode bridges that would produce sine distortion | as low as 0.3% at the lower frequencies. | | I'm not sure changing op-amps is going to gain you anything. | From what I recall, most of the 741 op-amps were used in the current | source circuitry, and not in the output stage, which was discrete. | The 502 that you have came a little after my time, but the circuitry | looks to be the same idea. | | I doubt I have a manual for yours, but feel free to e-mail me directly | at mkepp@hevanet.com if you have any questions. | | Mark Keppinger | Exact Electronics, 1975 - 1978   Link to this page is: <http://www.eevblog.com/forum/reviews/ old-waveform-generator-exact-electronics-model-502-lcs-question/> (text appears near bottom of page)   The page is from May 2012, but his mail address may still work.   eBay has several Exact / Dynatech manuals but none for the 119AL. Still it could be worth contacting sellers, as their stock might be larger than they currently offer for sale.   Two interesting sellers in that league: testgearnation <http://stores.ebay.com/testgearnationonlinestore>   Tucker Electronics <http://stores.ebay.com/Tucker-Electronics>   Cheers and good luck!

Ivan Vegvary <ivanvegvary@gmail.com>: Jan 09 09:47PM -0800 On Saturday, January 9, 2016 at 4:05:42 PM UTC-8, Ivan Vegvary wrote:   > Any help obtaining a manual would be greatly appreciated. Not looking for a freebie, willing to pay.   > Thank you, > Ivan Vegvary   Thank you so much for the links. I might have to purchase the manual for the model 125 and hope that it is close enough. Thanks, Ivan Vegvary

msukovic06@gmail.com: Jan 09 01:34PM -0800 > Click the Choose File button and choose any random file on your computer. I picked a small txt file. Now click the Upload button. Dont' worry about what file you choose. The operation will fail, but you will have jolted the receiver out of update mode.   > You're done. BCO Update message should disappear, and life is good again!   > I hope this helps!   e man thanks you are king   tnx from croatia

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