Jump to content


Photo

Lasonic L 30 HUMMmmmmmm

lasonic L30

  • Please log in to reply
5 replies to this topic

#1 chevyman-uy

chevyman-uy
  • Members
  • 638 posts
  • LocationSo far away the South - MVD - UY

Posted 16 July 2014 - 10:53 PM

I started to work in a proyect ,whit a Lasonic L30 .i dont need the tape function for this proyect ,so i cut all the wires from deck to the main boar ,

My idea is only works on radio and line in .but now have a HUMMM when put in the tape selector ,and a liltle humm in the line in mode .any ideas where is the problem? when aproach my hand close to the rec/play the hummm is more .any help is welcome , :hmmm: :-/ :-)

Attached File  170720141261.jpg   126.58K   19 downloads

Attached File  170720141271.jpg   115.71K   18 downloadsAttached File  170720141281.jpg   75.29K   18 downloadsAttached File  170720141291.jpg   95.74K   22 downloadsAttached File  170720141301.jpg   88.43K   21 downloadsAttached File  170720141321.jpg   117.99K   22 downloads

Attached Files



#2 JVC Floyd

JVC Floyd
  • Boomus Fidelis
  • 5,166 posts

Posted 17 July 2014 - 10:45 AM

prolly one of the ground wires from the deck causing that hum .



#3 chevyman-uy

chevyman-uy
  • Members
  • 638 posts
  • LocationSo far away the South - MVD - UY

Posted 17 July 2014 - 10:54 AM

prolly one of the ground wires from the deck causing that hum .

Thanks ,is a good point to star ,any help to find the deck ground ,? the most wiresof the deck are disconected when i open the box ,



#4 JVC Floyd

JVC Floyd
  • Boomus Fidelis
  • 5,166 posts

Posted 17 July 2014 - 10:59 AM

should be a black wire with a ring terminal on the end that screws to the metal chassis of the decks.



#5 chevyman-uy

chevyman-uy
  • Members
  • 638 posts
  • LocationSo far away the South - MVD - UY

Posted 17 July 2014 - 10:51 PM

the deck are just decorative ,dont have any conecction to the boar maybe need know where the groud wire is conected :hmmm:



#6 Alberto

Alberto
  • Members
  • 562 posts
  • LocationWallingford,Ct. USA

Posted 18 July 2014 - 06:38 AM

Maybe look for this, the muliti-conductor wire that goes from board to tape head for L+R signal has a shield that has to be connected to metal ground.





Also tagged with one or more of these keywords: lasonic L30