Jenn Air duel fuel range

[apu]

I have a Jenn Air  # JDS9860AAP  duel fuel range that the r/h rear burner would not lite.
Checked the spark electrode and it checked bad. Replaced the spark electrode and now the
r//h front burner is acting up. Check the continuity of wiring in the box all good, when you
lite the gridle side all electrodes fire perfect, but when you try to lite the r/h front single
burner weak/nothing?  Spark module
 
Thanks
Jim

[tgoods]

Since it fires good when turning another burner, I would say the spark module is good.  Check your voltage when turned on at the burner switch or at the module.  Should be about 0 vac at the switch and 120 vac at the module.

[apu]

Thank's   I will
Jim

[apu]

update
found block terminal to be bad p/n 74005890

Checked these connections ohm wise (check ok)
terminal wires were brittle.
 
thanks tgoods for tech support