Search results

Search Forums New Posts
  1. S

    multiple displays

    It depends completely on your displays. (The manufacturer) Contact the display (meter) manufacturer, and ask them. You may very well need an amplifier to drive that many displays, and especially if there is distance between meters involved.
  2. S

    Tektronix 2235

    I agree with davenn, the 1980's Tektronix scopes were designed to be repaired, I'd fix it if I could. Manual revisions are tied to the instrument serial number, and this particular scope also has a military version variant. A1Q9070 Tekt 151-1151-00 N-Channel MOSFET, SI, TO-220 pkg = MPT3N40...
  3. S

    Tektronix 2235

    I don't have the unit in front of me, just the manual. I see two FETs on a heat sink, are one of them the blown FET your're talking about (On A1, the Main Board)? Q946 Tekt 151-0476-02 SJ389 (Selected) Q947 Tekt 151-0476-02 SJ389 (Selected) To save space on the package, the Tektronix...
  4. S

    Tektronix 2235

    The manual parts list P#8-17, says (This is the A1 board): A1R909 Tekt Part #315-0390-00 Fixed Film Resistor 39 Ohm, 5% Tolerance, .25W I've got the manual, but don't know if I'll have time today to look up your other info. If I don't get back to you today, look for a post from me...
  5. S

    Boeing Lithium Battery Problem

    Last I heard, they were investigating the MONITORING SYSTEM manufacturer. The guys who made the system that supposed to monitor the battery status. Makes me wonder if it's the batteries, or the support system for them.
  6. S

    Mad resistor bands.??

    Typically, Silver is the .01 multiplier for tolerance. You'd need a really good ohmeter to read that. Let me ask, how did the resistor fail? Are you SURE it's a resistor? Resistors that overheat often cause the painted color bands to change color. You might be looking at an inductor, ... or...
  7. S

    Illinois...

    GonzoEngineer, you got there a few years before I did. I didn't appreciate it when they took my M-14 and issued us the M-16 (mine jammed every other magazine). But the civilian SP1 version I got in '73 operates flawlessly. I've got a newer version Colt AR, that also operates without any...
  8. S

    Illinois...

    I got my first AR in 1973, new in the box, for $180. Marion, Iowa cops just bought AR's for their cops at $2,000 apiece. Wise investment (political considerations aside). Congrats again, on finally getting the CCW rights up there.
  9. S

    A tricky audio issue. Please help!

    This may not help, but you're looking for ideas. 1) check some PS3 chat/web-sites to see what others have done to solve your problem, you can be sure you're not the first. 2) Radio shack used to sell some wireless headsets and transmitters cheap, but I don't know if they still do. I've got...
  10. S

    How to stop enclosure from dropping power when bumped

    I'd do like kMoffett says. My input is that there are all kinds of low profile, cheap, easily obtainable battery holder assemblies available. I'd be checking into securing the batteries into something that holds them in place tightly. Some nylon holders almost wrap themselves partially...
  11. S

    Need help finding or crossing these components

    If the company is still in business, ask them. You're not going to find anybody else who can cross those part numbers.
  12. S

    Identify this 4 legged creature.

    I don't design them, maybe that's why it failed (if the original design was borderline). I agree with *steve*, it's probably an 817C optocoupler. the 0912 is probably the date code, 2009, 12th week of manufacture. They're cheap. Good luck.
  13. S

    Cesium atomic clock

    You might check the NIST website, (used to be National Bureau of Standards here in the States). They're responsible for Standards for measurement accuracy. We're tied into their 'atomic clock' (we use cesium and rubidium clocks here), NIST is the standard by which all electronic...
  14. S

    CES 2013

    I'm having a tough time just trying to keep up with what's out there and around the corner. Cell phones, i-Phones, i-pads, .... Right now I'm trying to figure-out what to buy in the Kindle conundrum. People tell me not to buy the Kindle, get the Kindle Fire, somebody else says don't buy the...
  15. S

    Any ideas?

    I'm not familiar with your specific amp. If the selection switches are mechanical, I'd check them pretty closely. Often with mechanical selection switches for the different channels, the switches need to be cleaned if possible, or replaced. If your unit is electronically controlled, I'm...
  16. S

    Back to my old Sony SLV-R1000

    And also: Run your alcohol dipped cleaning tips over the rollers and metal posts that contact the tape. You've probably got little specs of dirt and etc... on those, and they'll just get onto your tape, and get run back onto the heads you just cleaned.
  17. S

    Back to my old Sony SLV-R1000

    It really sounds like your tape heads are dirty. Some cleaning tapes work ok and some don't. If you're taking the cover off, use a Q-Tip-type cotton stick with some isopropyl alcohol to clean the heads. IMPORTANT: You have small slits cut in the head that the actual reading sensor sticks...
  18. S

    Generator Cutts out when Load is applied

    The first thing I'd suspect is your pump. Is it jammed/seized? Do you have excessive back-pressure at whatever you're pumping into? Disconnect the pump from the hydraulic line, and see if it runs without load, then troubleshoot from there.
  19. S

    Illinois...

    Is that why the U.S. is considered a crackpot country by the rest of the world? If Fox News had any influence in the US, how did Obama win the election here? I thought they were against him. From the times I've check them online, Fox is against Obama, Obamacare, Pro-Gun, Pro-Death Penalty...
  20. S

    Illinois...

    Interesting in *steve*'s article that it is believed the media doesn't believe either side. In the U.S., the media only presents the liberal side in glowing terms, we never get the opposing view, only the liberal view they want to get out. (Except, from what *steve* has said in the past, Fox...
Top