8186Volvo244
New member
- Joined
- Jul 10, 2011
- Location
- ACT Australia
Hi guys. Unfortunately I have to add myself to the no startup list after installing my WS board. (Black WS board, only purchased a few months ago).
My symptoms are only an occasional pop as the car cranks. There is a spark but its very weak.
From what I've observed my logic level output from the WS board is very low, for the most part between 0.5 and 1v per channel as it cranks. That seems to result in erratic and short switch on/charge time for the coils, hence the weak spark.
Ok I'm pretty experienced at auto electrical wiring, so I'm confident I've got it all wired up right, including having the WS board outputs reversed. I've installed the WS board in two different EZK boxes with the same results. I've checked the wiring in the EZK to the WS board many times, the solders are all solid, I've got continuity with very low resistance between the pads on the WS board and the back of the PCB. I don't think I've cooked anything.
Does anyone have some ideas/experience with low WS board output that they can share?
(Edit: I have taken the time to read this entire post looking for ideas...).
(Edit2: I'm using a second hand J702T amplifier, and have swapped it for a new HUCO 138403 amplifier with no change, so they both seem good)
My symptoms are only an occasional pop as the car cranks. There is a spark but its very weak.
From what I've observed my logic level output from the WS board is very low, for the most part between 0.5 and 1v per channel as it cranks. That seems to result in erratic and short switch on/charge time for the coils, hence the weak spark.
Ok I'm pretty experienced at auto electrical wiring, so I'm confident I've got it all wired up right, including having the WS board outputs reversed. I've installed the WS board in two different EZK boxes with the same results. I've checked the wiring in the EZK to the WS board many times, the solders are all solid, I've got continuity with very low resistance between the pads on the WS board and the back of the PCB. I don't think I've cooked anything.
Does anyone have some ideas/experience with low WS board output that they can share?
(Edit: I have taken the time to read this entire post looking for ideas...).
(Edit2: I'm using a second hand J702T amplifier, and have swapped it for a new HUCO 138403 amplifier with no change, so they both seem good)
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