- Wacky radio. - 1 Update
- Sound Technology 1700B - 1 Update
- Shivaki SV-M22N VHS cassette player, no instructionss manual, no remote. - 1 Update
micky <NONONOmisc07@fmguy.com>: Jan 02 11:41PM -0500 Ahother story: I got my first FM clock radio around 1972, after I got to NYC which had FM stations. Maybe Chicago did too by then. Very fancy, GE, with two alarms, digital, two speakers, and I used it 20 or 30 years before the buttons got flaky. Took it apart and cleaned the buttons and it was good for 5 or more years. Took it apart and cleaned it and this time it only lasted 2 or 3 years. I can't keep doing this! So for probably 10 years I've been using it to listen to only one FM station. It turns off by itself or I turn the volume down to zero, and the only button that has to work is the On button. (It doesn't have push button frequency selection, and I found finding and pushing 3 numeric buttons to change stations more trouble than car-radio style, but they made then few if any table radios with car-radio buttons. Though I did see at a hamfest an AM/shortwave indoor radio from the 30's with mechancical memory for differnt frequencies. Came with little stubs/buttons already labeled WOR etc., and they sat on the 4 or 5" dial and would control where the dial stopped when you turned it.) But then that got hard and I'd have to lean on the left, the right, up, down, sometimes for 30 seconds until I pressed it just right to get it to go on. But two weeks ago, and this is why I'm writing, it got easy again, just push on the right side of the button and it starts immediately! I wonder how long this will last. Another thing, when I got back from a long trip, it would stay on forever. I just turned the volume off. If a transistor radio will play for many hours on a little 9v battery, they must not use much. And most of the power they use is for the speaker driver, right? But after a year there was a power failure and when the power came back on, it would turn off after, I guess, 24 hours, or maybe at the same clock time every time. I don't keep track. |
Trevor Wilson <trevor@rageaudio.com.au>: Jan 03 09:22AM +1100 Well, it's been a few years. My 1700B has decided to cease operation, so it really is time for a repair and full rebuild. Here's what I am planning: * Replace all electrolytic caps in the unit. One of the main filter caps is dead, so it's time to do the lot. * Replace all the carbon composition resistors. A quick check on half a dozen has shown a 15 ~ 25% upward drift. Why did ST use CC resistors? I've been using cracked carbon since the 1960s. * I was going to replace the OP amps with LME49710 OP amps, but, well, you know. NLA. AD797s look like the best, available option. Any other suggestions? * Replace all the opto couplers. |
John Robertson <spam@flippers.com>: Jan 02 10:10AM -0800 On 2022/01/01 3:37 p.m., georgewbell wrote: > I have over 100 tapes that I am trying to evaluate, but this is a very basic problem that is telling me that the only cause is the absence of these spare parts. It is a lovely little device, looks hardly used inside and could give years of service still. I think that most of my tapes were created on other make recorders. > Thanks for any help. Happy New year to all > George Bell. AIR there used to be an adjustment on the front of early video tape players that allowed you to shift the read timing (I think) slightly and this could reduce or eliminate the snow. However I don't recall seeing it on 90s and later video tape machines... John :-#)# -- (Please post followups or tech inquiries to the USENET newsgroup) John's Jukes Ltd. MOVED to #7 - 3979 Marine Way, Burnaby, BC, Canada V5J 5E3 (604)872-5757 (Pinballs, Jukes, Video Games) www.flippers.com "Old pinballers never die, they just flip out." |
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