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Project

Projecttitel:TTSH rev2 Buidling Guide

Status: IN PROGRESS

Startdate: 13 Nov.2014

Duedate: 15.Dec 2014

Manufacture link:  dsl-man.de

 

The second PCB release  aka v2 release is coming soon. the naming of v2 is related to the second sale from zthee, its not the same as zthess internal releasenumbers.

 

short:

  1. solder all SMD parts, clean this area after soldering if needed.
  2. mount 5 spacers to the pcb in order to have enough space for the resistor legs between your desk and the pcb.
  3. sort all the bags containing the resistors after the range:  1R -999ohm,  1k - 9,9k, 10k - 99k, 100k -999k, 1M - 22M,  sort all caps to MLCC and electrolyt caps too  -    it makes things easier
  4. mount the DC-DC regulator (black square) and  put the 4x  4n7 caps on the backside
  5. mount the powersection parts, power input header (white 2pole MTA156), the 3 inductors, resistors, caps..
  6.  make a  powercable with the 2,1mm pc jack (make sure you run a diode test with the 2,1mm jack - one of the poles is the switch, you dont need them)  be careful !!
  7. before you connect the wallwart psu to the jack/plugs of the pcb,  test the 12V DC polarity on the 2pol orange jack.
  8. connect the orange jack to the pcb header andplug in the wallwart
  9. test the -15V/0/+15V output on the PCB

  10. only if you measure -15/15V  you can continue building, otherwise you'll likely destroy all trannys, ics and other parts..

  11. build all 3 VCO Subboards - otherwise you'll have trouble with looking for the parts of the main pcb, this is strictly recommend  (you start with resistors, caps, ic sockets)  tempco and trannys are not needed yet.
  12. MAIN PCB at first only one side of the pcb !! at first fill the resistors in order to spot any leftover resistors.. then go to the next value.
  13. place all 100K resistors
  14. place all 1R 10R, 100R , 1k, 10K 1M resistors    22R,220R,470R, 330R,3k3, 33k,330k 3m3,  470r, 4k7,47k, 470k, 4m7,   680R, 6k8, 68k, 68k,  820R, 8k2,82k  you can fill the values like  69k1 or 33k2, 54k3 later...
  15. completely solder all resistors on the top side
  16. turn the pcb, cut the legs a bit shorter in order to be able able to solder them
  17. solder this pcb side and cut the legs
  18. put all the resistors on this side of the
  19. turn the pcb cut the legs, solder the reistors, cut the legs short
  20. fill the pcb with all ceramic caps (MLCC)  like 3p3, 5p, 10p, 20p (22p), 33p, 47p, 100p, 2n2, only MLCC caps not filmcaps here..
  21. solder the ceramic caps from the top, if the cap touches the pcb - put a small pice of cable (isolation) between pcb and cap to have enough space for soldering
  22. turn the pcb, solder the caps and cut the legs short
  23. turn the pcb again and put the few filmcaps in place step by step - it's easier to place the filmcap and bend the leg on the other side of the pcb - so that the cap doesn't fall off  -  solder the fimcaps from the backside and cut the legs.
  24. put the ic sockets in place step by step - maybe you have some help from someone fixing the sockets
  25. now take a break - if you haven't done before (wink)
  26. --  later –  no time yet

 

 

Picture of a Prototyp (without SMD inductors)

 

 

 

 

 

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