# RE: E825 troubleshoot fail-finned PWB **URL:** \ **Category:** GEM Forum\ **Created:** [June 29, 2021, 2:05pm UTC](https://community.electricforum.com/t/re-e825-troubleshoot-fail-finned-pwb/21776 "2021-06-29T14:05:50Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![Ricorasmus](https://avatars.discourse-cdn.com/v4/letter/r/9dc877/32.png) [@Ricorasmus](https://community.electricforum.com/u/Ricorasmus)\ **Post date:** [June 29, 2021, 2:05pm UTC](https://community.electricforum.com/t/re-e825-troubleshoot-fail-finned-pwb/21776/1 "2021-06-29T14:05:50Z")
I believe I need a Motor Controller and it’s been suggested you could help. GE 72V 350A CATALOG# IC36458H7R353T1 SERIAL# SH7R0045157P. ---
**Author:** ![Inwo](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/inwo/32/1067_2.png) [@Inwo](https://community.electricforum.com/u/Inwo)\ **Post date:** [June 29, 2021, 3:01pm UTC](https://community.electricforum.com/t/re-e825-troubleshoot-fail-finned-pwb/21776/2 "2021-06-29T15:01:08Z")
Can’t help with that. I’ll move message to open forum. ---
**Author:** ![Inwo](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/inwo/32/1067_2.png) [@Inwo](https://community.electricforum.com/u/Inwo)\ **Post date:** [June 29, 2021, 3:01pm UTC](https://community.electricforum.com/t/re-e825-troubleshoot-fail-finned-pwb/21776/3 "2021-06-29T15:01:28Z")
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**Author:** ![Old\_Houseboater](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/old_houseboater/32/544_2.png) [@Old\_Houseboater](https://community.electricforum.com/u/Old_Houseboater)\ **Post date:** [June 29, 2021, 4:03pm UTC](https://community.electricforum.com/t/re-e825-troubleshoot-fail-finned-pwb/21776/4 "2021-06-29T16:03:41Z")
Send to FSIP for re-manufacture. ---
**Author:** ![Ricorasmus](https://avatars.discourse-cdn.com/v4/letter/r/9dc877/32.png) [@Ricorasmus](https://community.electricforum.com/u/Ricorasmus)\ **Post date:** [June 29, 2021, 4:38pm UTC](https://community.electricforum.com/t/re-e825-troubleshoot-fail-finned-pwb/21776/5 "2021-06-29T16:38:25Z")
Thanks for the help. Great forum. ---
**Author:** ![Ricorasmus](https://avatars.discourse-cdn.com/v4/letter/r/9dc877/32.png) [@Ricorasmus](https://community.electricforum.com/u/Ricorasmus)\ **Post date:** [June 30, 2021, 9:15pm UTC](https://community.electricforum.com/t/re-e825-troubleshoot-fail-finned-pwb/21776/6 "2021-06-30T21:15:45Z")
Drive and Power System Troubleshooting Chart A step 6…Yes to 72VDC at contactor Yes to 72VDC at Motor Controller B+….They say, “replace the controller" They say, “if the voltage is 0 or significantly lower than the voltage on the contactor, check the wire and the Motor Controller." This doesn’t make sense. What would the correct reading be on the Motor Controller B+? I have pulled the Controller and am hesitating to send it to FSIP Is there some other way to verify the Motor Controller is the problem or should I send it across the country to them? ---
**Author:** ![Old\_Houseboater](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/old_houseboater/32/544_2.png) [@Old\_Houseboater](https://community.electricforum.com/u/Old_Houseboater)\ **Post date:** [June 30, 2021, 10:46pm UTC](https://community.electricforum.com/t/re-e825-troubleshoot-fail-finned-pwb/21776/7 "2021-06-30T22:46:51Z")
They will do a diagnostic for a charge. Don’t know how much it is today though used to be 58 bucks about 6 years ago. ---
**Author:** ![Ricorasmus](https://avatars.discourse-cdn.com/v4/letter/r/9dc877/32.png) [@Ricorasmus](https://community.electricforum.com/u/Ricorasmus)\ **Post date:** [July 1, 2021, 12:52am UTC](https://community.electricforum.com/t/re-e825-troubleshoot-fail-finned-pwb/21776/8 "2021-07-01T00:52:13Z")
Outstanding. The form to send with the unit asks what the problem is with the controller. I don’t know. You have been a great help. I’ll ask for a diagnosis first and a rebuild if necessary.