DDEC III & IV circuit board repairs and component replacement

When the circuit board or circuit board component in a DDEC suffers damage that results in the loss of some or all ecm functions then replacing the damaged ECM and programming the replacement is sometimes the only option.  Other times depending on the severity and location of the damage an ECM circuit board repair could be attempted to reconstruct the damaged section of circuit board and replace any damage components to restore road worthiness and full ECM functionality. Many of the major components inside a DDEC III or DDEC IV had an expected service life of 50 years or more. Premature failures are not uncommon but most of the time when something like the primary microprocessor or the analog to digital converter fails it’s because the component suffered damage from heat, too much current, oxidation damage from water or battery acid, or exposure to voltage that exceeded the components maximum rated voltage. Sometimes the damage is immediately obvious and sometimes it isn’t and requires component specific tests to be identify and locate. The demand for DDEC III and DDEC IV repairs at DCS is growing and thanks in part to advanced inspection, diagnostic and microsoldering tools make microscope aided repairs to trace packed sections of circuit board and fine pitch components feasible and all other repairs more precise and reliable. The net result is more DDEC repairs are go back on the road and less to the core pile and our core pile is shrinking. Some DDECs that were in our core pile are back on the road after completing a successful repair on a DDEC that I at one time believed wasn’t worth a repair attempt.

Estimated Cost


$500-$1050+return shipping

  • When repairs the circuit board or replacement of any integrated circuits or components other than the memory or the internal ECM battery are needed then a rebuild job upgrades to a repair job.
  • Average job completion time is about 1 to 2 weeks provided other scheduled jobs are not pending.
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