smurfer77's Recent Activity

  1. smurfer77 liked JBL GUY's post in the thread Difference between a dim bulb tester, current limiter & a variac with current meter?.

    More support for the use of a DBT, some information previously posted. The primary purpose of the dim bulb tester is to limit the...

    60 WATT BULB TURN ON TIME.JPG 60 WATT DIMMING TEST.JPG Mar 20, 2019 at 2:04 AM
  2. smurfer77 liked mhardy6647's post in the thread Difference between a dim bulb tester, current limiter & a variac with current meter?.

    The dim bulb tester is also known as a 'poor person's Variac' -- it gives one discrete voltages depending on the bulb's wattage (more to...

    Mar 20, 2019 at 1:59 AM
  3. smurfer77 liked skippy124's post in the thread Sansui AU-666 repair and restore thread.

    Hi, F004/F006 are the + and - supply for the right channel. It would appear that the right channel output transistors are shorted, but...

    Mar 20, 2019 at 1:30 AM
  4. smurfer77 liked kevzep's post in the thread Sansui AU-666 repair and restore thread.

    You've got blown output/driver transistors. DBT is good, saves the components and allows you to diagnose.

    Mar 20, 2019 at 1:30 AM
  5. smurfer77 replied to the thread BA-3000 transformer hum: how much is normal?.

    When i hear a transformer humming its usually indicating a fault in the amp resulting in more than usual current being drawn from power...

    Mar 20, 2019 at 1:26 AM
  6. smurfer77 liked Hyperion's post in the thread BA-3000 transformer hum: how much is normal?.

    I can turn any one of my six Sansui amplifiers full up, with other than Phono inputs selected and hear just a bit of hiss, noticeable...

    Mar 20, 2019 at 1:07 AM
  7. smurfer77 liked kenwood61's post in the thread Sansui CA-3000 ... I'm diving in!.

    More pics.

    P3080118.jpg P3080119.jpg P3080120.jpg P3080121.jpg P3080122.jpg P3080123.jpg P3080124.jpg P3080125.jpg P3080126.jpg P3080127.jpg Mar 19, 2019 at 2:38 PM
  8. smurfer77 liked kenwood61's post in the thread Sansui CA-3000 ... I'm diving in!.

    So finally, after about 6 years of owning this preamp in a box, from the original owner that I also got the BA-3000 from, which is now...

    P3080129.jpg P3080128.jpg P3080130.jpg P3080111.jpg P3080112.jpg P3080113.jpg P3080114.jpg P3080115.jpg P3080116.jpg P3080117.jpg Mar 19, 2019 at 2:38 PM
  9. smurfer77 replied to the thread 5000X in need of some love...

    Agree with John... and even by shorting leads and subtracting this value from measurement it's not going to be super trustworthy because...

    Mar 19, 2019 at 1:42 PM
  10. smurfer77 liked skippy124's post in the thread Sansui AU-666 repair and restore thread.

    Hi, BC639 and BC640 are a match to the CDC8002 and CDC9002 spec wise (and were a recommmeded replacement back in the 90's). I have used...

    Mar 19, 2019 at 12:54 PM
  11. smurfer77 liked stopkidding's post in the thread Sansui AU-666 repair and restore thread.

    Thanks @stereofun and @AnalogueBen. I bought one from amazon. I am waiting for the new fuses to arrive. In the meantime, I lubed the...

    IMG_20190318_195048.jpg IMG_20190318_195105.jpg IMG_20190318_200649.jpg IMG_20190318_200845.jpg IMG_20190318_200845.jpg IMG_20190318_201156.jpg IMG_20190318_201634.jpg Mar 19, 2019 at 12:54 PM
  12. smurfer77 liked stereofun's post in the thread Sansui AU-666 repair and restore thread.

    Buy a cheap transistor tester on amazon - it might not be exact but it will be exact relative to the pairs your are measuring hfe on. I...

    Mar 19, 2019 at 12:54 PM
  13. smurfer77 liked stereofun's post in the thread Sansui 800 Resto - she played hard to get, but in the end.....

    Here is the parts list - with some updates: (sorry the neat arrangement does not translate) Sansui 800 F-1100 Driver board...

    Mar 19, 2019 at 12:52 PM
  14. smurfer77 liked stereofun's post in the thread Sansui 800 Resto - she played hard to get, but in the end.....

    Yes - one note about the supply cap. If you were to go much higher than the 4700 uf, then you'd need to address the rectifier which...

    Mar 19, 2019 at 12:52 PM
  15. smurfer77 liked stereofun's post in the thread Sansui 800 Resto - she played hard to get, but in the end.....

    Good questions - I cant compare the sound from 100/50 to the 220/50 - so its more about good practice. If you look at schematic, then...

    Mar 19, 2019 at 12:52 PM