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  1. MattyMatt

    Tektronix 475A Display problem [Horizontal?]

    Okay, I wanted to post more updates, I think I have successfully located the bad cap(s) I am not sure if C1442 is bad, perhaps someone can suggest a test point for me... I have attached a circuit diagram of the +15V supply and pictures of the areas in question. I tried to center C1448 to the...
  2. MattyMatt

    Tektronix 475A Display problem [Horizontal?]

    Okay, so here's my update I went through after warming everything up for about 20 mins or so. Set my buddy's scope up with the following settings: 1V/DIV (I figured I could adjust as necessary later) 5ms/DIV 1X (not zoomed in) focus and intensity as required I went strait for the -8V...
  3. MattyMatt

    Tektronix 475A Display problem [Horizontal?]

    Thanks again Dave! I was kind of wondering about the ohmmeter thing... probably fine while its out of the circuit, but it made my eyebrow raise a tad.... I will probably be posting an update in a little while, after prepping my work area and warm up the scopes. I'll let ya know what I...
  4. MattyMatt

    Tektronix 475A Display problem [Horizontal?]

    Gonna give this one a little bump, I just got myself into the yahoo Tektronix group... WOW lots of info. I posted there and linked to this post, and almost immediately got a response... I was advised to check the -8V supply line for ripple, suspecting one of the caps had gone... which I...
  5. MattyMatt

    tektronix 2467b oscilloscope fail codes

    Wasn't able to find any very detailed myself, but I would recommend, if you care to join, at this group... I am still in the process of being approved myself... but I did some scouring for some help with my Tek 475A, and I came across them, Apparently there are a lot of old tek employees that...
  6. MattyMatt

    Aiwa Cd Player problemo

    well, as far as alignment goes, I am honestly not too sure, it very greatly depends on the actual player itself... I have honestly not done any of these kinds of alignments I have only done the ones on a PS2... and those are very time consuming due to how it is supposed to be tested. I know...
  7. MattyMatt

    Ground Loop?

    Gotcha, I appreciate the clarification Res, it just seemed a little odd, perhaps the poster of the review worked in a very static sensitive environment... that would explain a lot. As far as pain induced by ESD... I'd have to say I did have one occasion where i worked in an older radioshack...
  8. MattyMatt

    Failed the "Smoke Test"

    I gotta say, that is an impressive bit of "magic smoke" (as I like to call it) ! I've never seen quite the quality and quantity :-)
  9. MattyMatt

    Ground Loop?

    Okay, this is more of a laugh than something serious... I just wanted to make sure my thoughts were correct before I started laughing too hard and making an idiot of myself.... I was reading this post/review of a product (below, italicized) I am considering buying... this is an external hard...
  10. MattyMatt

    Aiwa Cd Player problemo

    I will be honest... I don't know a lot about laser reading... but I have fixed a couple of PS2's with similar errors... could it be a laser lens misalignment?
  11. MattyMatt

    Battery Driven Alarm Clock Mystery

    Looks pretty insulated to me! Glad you got to the root of the problem. Good luck and have fun boating Matty-
  12. MattyMatt

    Whats the MOST common cord length for electronics???

    that's a pretty hard question to answer because it ranges quite a bit, to narrow stuff down a bit could you give us a better idea of what exactly you are going after, specifically in the electronics/tech industry.... for example: I do a lot of work on laptops and computers in general... the...
  13. MattyMatt

    TC682 to Drive LED.

    Cool, well I'm glad you got it working! good ole' polarity!
  14. MattyMatt

    Identifying a lead to board connector

    As far as that particular connector goes, I am not sure what it is called. However it does look like it would possibly fit... but it may just be tight. if you have tried already which I assume you have, please correct me if I am wrong, I would say the side that is up right now, would go against...
  15. MattyMatt

    TC682 to Drive LED.

    What did you do differently?
  16. MattyMatt

    toshiba 50871 rptv rainbow at top and bottom..

    Maybe see if someone replaced the speakers in the cabinet with ones that were a little above spec... or someone removed the magnetic shielding. Anything that has to do with something that is magnetic, close to the CRT (in your case a projection lens assembly) is going to have that strange...
  17. MattyMatt

    Battery Driven Alarm Clock Mystery

    I agree with Steve on this one... I shook an analog clock for a few minutes... mostly because this posting intrigued me... it lost about 30 seconds for about a minute or so of shaking... though I was being pretty rough... I would say that this mechanical issue would be more likely than an...
  18. MattyMatt

    Degen 1103 telescopic antenna repair?

    Generally, the telescopic antennas seen on a lot of devices, are more of a pain to repair then they are worth... you generally need all kinds of things (like a flanger for tubing) that most people don't have readily available. As for a replacement, it would be best if you got the same length...
  19. MattyMatt

    Finding Switches for Project

    Maybe Switchcraft... this link is to their more industrial stuff.... I know the actual switching components are pretty awesome, and you can dig around and see if you can find some knobs that are nice... http://www.switchcraft.com/Category.aspx?Parent=653 You can also check out their main page...
  20. MattyMatt

    Help identifying Antenna on RF receiver

    One thing you could try, is find out how long this trace is (as accurately as possible), and make a wire antenna out of some stranded copper wire (maybe 20 AWG or so?) and see if that works a little better... I'm no RF technician, but I dabble a bit in radio technology.
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