Sid Genetry Solar Posted October 17, 2022 Share Posted October 17, 2022 36 minutes ago, JSG said: Am I able to get my parts thru you guys? Unfortunately not...Sean is no longer doing PJ repairs, and as such does not have access to parts. (And even when he did, any repairs had to be handled through PJ.) If we produced our own "spare parts", they would not be complementary, as otherwise we'd go broke trying to keep PJ inverters running! 1 hour ago, JSG said: One pic is the control board, the one has a banged up crystal on it, but you can see the discoloration on the FET. The other one beside it, is a new one. Gets hot fast on that same fet. Banged up crystal? Which FET on the control board are you referring to? 34 minutes ago, JSG said: With the negative side disconnected, the board closest to the fan lights up, the other one does not. I am at 24v. This indicates a hardware issue. I would suggest: removing and checking that particular MOS board that doesn't light up, verify it's good with a diode check. (LED should light up with a DMM in diode check mode if you measure positive from a FET heatsink and negative to any of the non-gate screw terminals. Remove it from the inverter first!) If the MOS board IS good, then there's a hardware fault somewhere on the mainboard--OR it could be a miswired ribbon cable (if this inverter's never run before). Try unplugging the rainbow ribbon cable from the control board and see if the LED comes back on. if this is the case, that would explain why the LF Driver board gets so hot--however, I would expect a very hot chip to be a very damaged chip. Quote Link to comment Share on other sites More sharing options...
dickson Posted October 17, 2022 Share Posted October 17, 2022 Banged up crystal? Which FET on the control board are you referring to? Bang up capacitor ? TLP350 on LF driver board ? Quote Link to comment Share on other sites More sharing options...
dickson Posted October 17, 2022 Share Posted October 17, 2022 Am I able to get my parts thru you guys? Your control board look like rev 11.0 or rev 11.1 from the picture of he ribbon cable which is no longer availabe from Powerjsck in China . I think the rev 11.3 control board AND a complete rev 11.3 mainboard will be needed to repair . Parts avilable from Powerjack in China . IF your control board is a rev 11.3 then do not need a complete mainboard . For unknown reason the rev 11.3 mainboard ribbon cable do NOT match the rev11.1 or rev11.0 or rev10.3 or rev9.0 control board . Quote Link to comment Share on other sites More sharing options...
JSG Posted October 17, 2022 Author Share Posted October 17, 2022 The fet on the far right is discolored from heat. No, unplugging the ribbon does not turn that board on. I am going to install a new MOSFET board now, and see if it lights up. Quote Link to comment Share on other sites More sharing options...
NotMario Posted October 17, 2022 Share Posted October 17, 2022 Did you replace all 4 mosboards at the time? Without testing individually, usually you'd replace all of them whenever one needed replaced. Quote Link to comment Share on other sites More sharing options...
JSG Posted October 17, 2022 Author Share Posted October 17, 2022 Hm, put a new MOSFET board on, all 4 are now lit. Put it back together and find out? Lok Quote Link to comment Share on other sites More sharing options...
JSG Posted October 17, 2022 Author Share Posted October 17, 2022 11 minutes ago, NotMario said: Did you replace all 4 mosboards at the time? Without testing individually, usually you'd replace all of them whenever one needed replaced. More than once...lol Quote Link to comment Share on other sites More sharing options...
JSG Posted October 17, 2022 Author Share Posted October 17, 2022 Ok, back together. Turn it on, nothing explodes, all green lights, then is pulsating the LEDs on the MOSFET board on the negative side, and beeps after a bit. Quote Link to comment Share on other sites More sharing options...
JSG Posted October 17, 2022 Author Share Posted October 17, 2022 (edited) https://youtube.com/shorts/G0FiYhbA4lo?feature=share Forgive the loud fan, it's on the other inverter. Have to look close to see the green LEDs start flashing. Actually, it's more of a.pulsating. and all of the boards do it to an extent. Edited October 17, 2022 by JSG Quote Link to comment Share on other sites More sharing options...
JSG Posted October 17, 2022 Author Share Posted October 17, 2022 Well, now it does nothing when you turn it on. Just green lights on the boards. Quote Link to comment Share on other sites More sharing options...
dickson Posted October 17, 2022 Share Posted October 17, 2022 Well, now it does nothing when you turn it on. Just green lights on the boards. Look like a rev 11.1 control board is bad . Powerjack do not make rev 11.1 control board for some unknow reason ? I replace my rev 11.1 with the new rev 11.3 but also replace the mainboard and ribbon cable . IT works but no LED on LF driver and I will load test later . 1 Quote Link to comment Share on other sites More sharing options...
Sid Genetry Solar Posted October 17, 2022 Share Posted October 17, 2022 2 hours ago, JSG said: Ok, back together. Turn it on, nothing explodes, all green lights, then is pulsating the LEDs on the MOSFET board on the negative side, and beeps after a bit. Well, that's a start..... Pulsating LEDs, but do you have the AC output transformer reconnected to the heatsink? Quote Link to comment Share on other sites More sharing options...
JSG Posted October 17, 2022 Author Share Posted October 17, 2022 Sid, yes I did...lol Quote Link to comment Share on other sites More sharing options...
Sid Genetry Solar Posted October 18, 2022 Share Posted October 18, 2022 I have to say, honestly....being a PJ, there's pretty much absolutely nothing for diagnostics. If you have an oscilloscope, there's a chance you could trace signals and see if anything coming out of the MCU ("CPU") is correct. But as the previous driver board had blown low-side transistors, I would not be the slightest bit surprised if control board circuitry upstream from the driver board is damaged. Quote Link to comment Share on other sites More sharing options...
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