Recent content by TonyK

Hi may just me on Sunday mornings but can you post a drawing as I have the same problem. “Drawer a rectangle 190 x 380 , make it 380 one side and 280 the other” ? Thanks

I read somewhere on this forum that adjusting R15 (620R) would adjust the DC offset, but I don't know what other effect it would have.

Just acquired these :)

Just reporting back, I now have 4 Hackernaps playing music :) I soldered all the crimps and followed John's recommendations for fault finding, D3 open circuit on one board and blown output transistor on another. The only problem I seem to have is the bias on one board very slowly but surely...

I also have the led's but also found an intermittent bad crimp on one on the 0v returns that occasionally became disconnected causing my problem.

Thanks, just might have found my problem, maybe ?

Could a dodgy crimped 0v return on the +ve cause the neg ve to overload? Tony

Hi Alan Thanks, that will keep me busy this weekend I will report back Tony

Thanks for the reply's it will be the weekend before I can get at it. C2 was just something I noticed and wondered about, didn't think it would be the problem since no one else has mentioned it. No caps dramatically failed but will check later, not checked the IRF610 yet. The HackerCap seemed...

That's what the hackernap schematic says however the original schematic is the other way round.

Hi all just had blue smoke from the neg rectifier diodes!! and very high DC offset, Working fine last night but not tonight working thro the usual checks. Going over the original circuits on accoustica and Les's schematic, C2 is reversed from the original schematics (originally C6) I'm using a...

Thanks. Tony

Just a quick question 2SK117's BL, GR or doesn't it matter?

Tim, Very sorry for the delay been overly busy with work Funds transferred Tony

Sorry been out of the office I will transfer funds tomorrow Tony