Jump to content


High Rollers
  • Content count

  • Joined

  • Last visited

  • Days Won


chinsettawong last won the day on May 9

chinsettawong had the most liked content!

Community Reputation

152 Excellent

1 Follower

About chinsettawong

  • Rank
  • Birthday 04/13/1966

Profile Information

  • Gender
  • Location

Recent Profile Visitors

2,732 profile views
  1. chinsettawong

    The Headcase Stax thread

    Have you tried resolder all the joints? If nothing helps, you might want to try recoating the diaphragm.
  2. chinsettawong

    Happy Birthday Spritzer

    Happy belated birthday Birgir. Wish you could come to visit me in Bangkok someday.
  3. chinsettawong

    Happy Birthday Nebby!

    Happy birthday!
  4. chinsettawong

    Happy Birthday sechtdamon!

    Happy birthday!
  5. chinsettawong

    grounded grid

    Thank you so much for all your advices. I've finally fixed the problem. The C2M1000170 and 10M90S on my board have gone bad for some reasons. I replaced C2M1000170 with a SCT3080KLGC11 from a local store, and luckily it worked. I parallel the 5R with one more 5R, and now the power supply is working perfectly. The amp has been running for at least 2 hours with no problem. I couldn't have fixed it without your help, Kevin, Blueman2, and Soren. Thanks again.
  6. chinsettawong

    grounded grid

    The voltage was about 465V without load. Took out the 2n3904 and connected the amp board. Fired the amp up and the B+ became around -12V. Switched it off and the voltage gradually came up to around 45V then went down to 0. Can I try to change some R to increase the current limit a bit more instead of taking the 2n3904 out?
  7. chinsettawong

    grounded grid

    I need a little help here. When the amp is running, my B+ voltage keeps on swinging between 370-410V while B- is stable at 465V. Is my B+ supply running out of juice? What can I do to fix? I'm using this PS board.
  8. chinsettawong

    Goodbye Tyll. Happy Travels

    Hope to see you in Bangkok, Thailand someday, Tyll! Enjoy your retirement.
  9. chinsettawong

    Happy Birthday Shelly!!!

    Happy birthday Shelly!
  10. chinsettawong

    Happy birthday, Nikongod!

    Happy birthday Ari!
  11. chinsettawong

    grounded grid

    It sings! Thanks for all your advices. For some reasons, the silkscreen on my PCB asks for 250 ohm for tail resistors. I replace it with 120 ohm and now everything can be adjusted correctly. Now I need to work on the top cover. The amp sounds awesome.
  12. chinsettawong

    grounded grid

    Are these the two resistors that I should replace?
  13. chinsettawong

    grounded grid

    Thank you so much. I’ll try changing the tail resistors tonight.
  14. chinsettawong

    grounded grid

    I need a little help with my GG. I just can't adjust the offset of both channels below 50V for some reasons. The balance adjusts to zero just fine though. My PS is measured at 465V. The bias is set at 0.8V or 16mA.
  15. chinsettawong

    grounded grid

    Really nice build. Congratulations!