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kevzep's Recent Activity

  1. kevzep replied to the thread Do I need a transistor tester?.

    Yes they do, diodes, JFets, mosfets...... I use it for that all the time...

    Dec 16, 2018 at 8:55 PM
  2. kevzep replied to the thread Want to salvage a Sansui 5050..

    Normally transistors short-circuit, although I have on the odd occasion seen one go open......Not the typical failure mode here.

    Dec 16, 2018 at 6:57 PM
  3. kevzep replied to the thread Do I need a transistor tester?.

    Atlas also make a capacitor tester as well, its a bit pricey, but it measures capacitance and ESR up to 22,000µF... I also use this...

    Dec 16, 2018 at 12:04 PM
  4. kevzep replied to the thread SX-1250 New Issues.

    Yeah this is what I saying, its not just the electrolytic caps causing issues these days, other types of caps are starting to fail now...

    Dec 16, 2018 at 12:02 PM
  5. kevzep replied to the thread SX-1250 New Issues.

    Did you replace the ceramic caps C3 and C4?

    Dec 16, 2018 at 3:32 AM
  6. kevzep commented on Stereo's profile post.

    The negative part is irrelevant. The important and only relevant part is the actual number, and 430mV is extremely high. The Voltage...

    Dec 16, 2018 at 3:31 AM
  7. kevzep replied to the thread SX-1250 New Issues.

    Replace C3 and C4 on the Stabiliser, I had C3 partially shorted on the one I restored a few months ago. It basically was pulling the...

    Dec 15, 2018 at 10:09 PM
  8. kevzep replied to the thread Do I need a transistor tester?.

    Peak Atlas DCA55, cheap, reliable and pretty accurate, get 'em off ebay..... I use it all the time, good for matching HFE, checking...

    Dec 15, 2018 at 6:04 PM
  9. kevzep liked JOMARK911's post in the thread QRX Restore....anyone used them before?.

    Come on Justin , you managed to get me interested in your exceptional work anyway. I was thinking of shipping my 9001 from Greece for a...

    Dec 15, 2018 at 6:02 PM
  10. kevzep replied to the thread Want to salvage a Sansui 5050..

    If the output transistors were blown it would blow the mains fuse or the rail fuses. Do not connect speakers to it whilst there is...

    Dec 15, 2018 at 1:48 PM
  11. kevzep replied to the thread McIntosh mc500.

    I wouldn't do anything which could affect the convection cooling these amps are designed with. It might be fine, but its not something I...

    Dec 15, 2018 at 12:33 PM
  12. kevzep replied to the thread What is really "unobtainium" for the Pioneer SX-xx80 series models these days?.

    I'd have to look through my notes, I have one for the multiplex and one for the IF chip.....I can't remember off the top of my head,...

    Dec 15, 2018 at 12:26 PM
  13. kevzep attached a file to the thread Sansui G-22000 Restoration/Upgrade Thread.

    I finally finished up my G22000 this morning, I had already done a lot of work, a full recap, new relays, trimmers and some transistors...

    G22K Phase and Frequency.jpeg IMG_7194.JPG IMG_7196.JPG IMG_7198.JPG Dec 14, 2018 at 10:19 PM
  14. kevzep liked allhartfidelity's post in the thread QRX Restore....anyone used them before?.

    Being able to do some work myself, i studied up on the 9001. The idea of getting that board out, and restringing the dial tuner killed...

    20180915_234025.jpg Dec 14, 2018 at 7:05 PM
  15. kevzep liked smartin53's post in the thread VERY INTERESTING! McIntosh Celebrates 70th Anniversary.

    I may be in the minority but I really like these (if anything for their looks and unique spin on the past). Mcintosh has been playing...

    Dec 14, 2018 at 6:55 PM