414mii power pcb schematic

Discussion in 'TASCAM DIY Repairs and Mods' started by zorkzorkzorkzork, Aug 23, 2020.

  1. zorkzorkzorkzork

    zorkzorkzorkzork New Member

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    I had a busted power jack. soldered in a new one and one of the pads lifted. any place i can find a schematic for this?
  2. SkywaveTDR

    SkywaveTDR Well-Known Member

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    This is the trouble of using board mounted power jacks as they are never made for long term abuse. The use of an epoxy and then some resistor lead patching will be the solution and of course not to twist and torque that power plug. This has happened for 2 decades with Sony Walkmans and any portable equipment.
  3. zorkzorkzorkzork

    zorkzorkzorkzork New Member

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    Thanks for your reply but i replaced the power jack. One of the solder pads lifted off the board when i did this so i was looking for a schematic to see if i could run a jumper. Instead i exposed a copper trace on the board and soldered it in but the unit still doesnt work. Is there any place i can find a 414mkii schematic or can purchase one so i can do some real troubleshooting?

    thanks
  4. topdrizzy

    topdrizzy New Member

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  5. SkywaveTDR

    SkywaveTDR Well-Known Member

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    He needs a service manual not a owners manual and I used to suggest to get them from Stereomanuals.com but Rick the owner died. Maybe this will help-
    Last edited: Jan 12, 2022
  6. SkywaveTDR

    SkywaveTDR Well-Known Member

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    upload_2022-1-12_2-39-0.png
  7. SkywaveTDR

    SkywaveTDR Well-Known Member

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    upload_2022-1-12_2-41-23.png

    J601 is power input jack. The 12 Vdc is regulated down to 9Vdc by a LM317T.