16 Juni 2009

How to repairing MSD 6AL ignition

When you have damaged or burned msd 6al and you can afford to shiping it to MSD repair center then its the best way to get things done, but if you live at the rest of the world, like me living in Indonesia, when I cant afford to shiping the unit because of costs, shiping fees, taxes packing ... etc .. can cost more than new unit then you must try repair it by yourself.





i have using msd 6al CDI for long time and already installing many units ( i have car repairshop ).


however i noticed that type of msd many time having problem or burned component inside, then i research the problems and find thats all problems of msd damaging process begins from 2 little condensators ( tantalum 2.2uf ). If buy new msd better you change this two C's with unipolar 2,2uf 50v electrolyte.
Anyway one of them have wrong position / polarity if compared from datasheet of ic TC4627, you can download this datasheet from many datasheet sites, try searching.














They are have function of voltage multipliers with driven by IC TC4627, when condensators fails then voltage that drives mosfets begins to drop and mosfets starts to overheat because they working regime falls to the linear region ( not switching anymore ).... and then IGBT BUP 213 fails and with the consequences of burning step up voltage mosfet FS70KM and sometimes damaging zener diode 1N5244 B, in rare cases high speed rectifier diodes can too be damaged.





99% after you changing condensators on pin 1,2 & pin 3,4 ( gnd ), then changing zener 1N5244 B near FS70KM ( 4-th semiconductor from left ), change FS70KM ( you can replace it with IRF 1010E but you must using mica isolator from cooling body ground / casing and silicon paste), and change BUP 213 ( you can change it with IRG4PH40K again IRF product. Using mica isolator and you must move it position to side of housing using extension wires) after this ....... the unit will work !!


Sure before u change this components check it first if they are damaged, to reducing repair cost.









okay ... im tired ... more infos later ...


test .... blog under construction.... and sorry about my english quality :-)

3 komentar:

  1. Msd 6al, analog version, it's better because it is easier to repair and had power more than you need :-)

    BalasHapus
  2. kerbauxbotak@mail2xfiles.com7 Juni 2019 pukul 20.15

    Are you still active with repairing 6al...?? I am very interested to know about the latest news, updates...

    BalasHapus
  3. Mr Benjamin went above and beyond their requirements to assist me with my loan which I used to expand my pharmacy business,They were friendly, professional, and absolute gems to work with.I will recommend  anyone looking for loan to contact. 247officedept@gmail.com.WhatsApp ... + 19893943740.

    BalasHapus