Powerjack 9000 watts 48vdc easy repair

[dickson]

I bought a Powerjack 9kw 48 vdc for 250 dollars  and FED EX  delivered  no damage .   

[dickson]

I  remove the top cover  and  remove  the rev 11.1  control board .    The ribbon cable to the mainboard  has one wire disconnected in the picture .  

The  picture show how I test the mosboard and  FETs  .    The mulimeter is in Diode mode .   The first leg is always 1 .   The third leg is  between  450 to 650 .     The  mosboard in my  9000 kw have all  green LED light on .   The mainboard is good and worth  200 dollars .    I will test the  control board  later .  

[RobertM]

Looks good. What transformer is in it? Four caps on the main board?

Edited November 26, 2022 by RobertM

[dickson]

Looks good. What transformer is in it? Four caps on the main board?

The  main board has 4  capacitors .    The 9kw inverter is not  connected  to battery  yet and   the  ribbon cable in the  picture has a wire  out  which show the worker  who get pay in peanuts do not care .    The  transformer is  ASL6.5  which  normally in a  15kw  inverter .   I  have to  test the  rev 11.1 control board  and check all wires  and AC output board  later with pictures .      A bad  LF driver  or control board  will destroy  the good  200  dollars main board  and all the  FETs .    

[RobertM]

5 minutes ago, dickson said:

Looks good. What transformer is in it? Four caps on the main board?

The  main board has 4  capacitors .  The  transformer is  ASL6.5  which  normally in a  15kw  inverter .  

This may  be a good deal for you.

[Sid Genetry Solar]

2 hours ago, dickson said:

which show the worker  who get pay in peanuts do not care

If you're so worried about the workers, why do you keep buying the product?

[dickson]

If you're so worried about the workers, why do you keep buying the product?

The product  from Powerjack like inverter and  cable  and  mosfets and main board are cheap  .   I  am worried about  the  quality control  which is almost none and I have to check  every  wires and mosfets and resistors on mosboard  and burn spots on control board  and LF driver  and  every  screws on wires  before power on with  the inverter switch .     IF  the GS 12kw  is  assemble  in China  and  all are 48 vdc and  you do not have to open the box and check then I am worried  as a buyer .   I am stil  checking my 9000 kw and will show what I find  but so far  it is worth  200 dollars and if  working  then  worth  700 dollars .     

 

[Sid Genetry Solar]

5 minutes ago, dickson said:

IF  the GS 12kw  is  assemble  in China  and  all are 48 vdc and  you do not have to open the box and check then I am worried  as a buyer .

That's never going to happen.  Every single GS inverter shipped from China arrives in the States in a completely unusable state.  Transformer not wired, without the WiFi board, and with zero programming in the processor.  The factory can't even test that it runs before it goes out the door.  All final assembly and testing is Sean's responsibility.

[dickson]

The pictures  of the  Main board  for my test bench .    The main board has no capacitor and only  4 mosfets .      The purpose is to see if the rev 11.1  control board  will blow up the 4 mosfets when the inverter power switch is turn on .     IF the 4 mosfets blow up then  it time to order a new  rev 11.3 control board with LF driver .      IF you have the  rev 11.0 control board and  blow up the 4 mosfets  then  you need to  order new rev 11.3 mainboard to match  a new rev 11.3 control board and LF driver and cost about  300 dollars .        

[JIT]

On 11/26/2022 at 4:15 PM, Sid Genetry Solar said:

That's never going to happen.  Every single GS inverter shipped from China arrives in the States in a completely unusable state.  Transformer not wired, without the WiFi board, and with zero programming in the processor.  The factory can't even test that it runs before it goes out the door.  All final assembly and testing is Sean's responsibility.

So nothing from China is tested before shipping?

[dickson]

So nothing from China is tested before shipping?

I  am still testing my  9000 watts Powerjack  and I  can not trust the  workers that JACK hire .     I have not turn on the inverter  switch yet .   I  found  broken wires  and broken connector  .     Later I  will  check the  AC output  board  and look like  it was  miss wired .        The GS 12kw  can not be tested  in China  as Sean  has to do the testing  and final assembly .     

[dickson]

Looks good. What transformer is in it?

Strange  David is selling  ASL 6.5  transformer again   since Sean is selling transformers .   I think the ASL 6.5 is the best transformer by Powerjack .     Someone on this forum is using  ASL 6.5 inverter  24/7 on his farm  .    I  have to get my  9000 watt with the ASL 6.5  running but need more research .    

[RobertM]

30 minutes ago, dickson said:

  I  have to get my  9000 watt with the ASL 6.5  running but need more research .    

 

Did you test the control board?

[dickson]

Did you test the control board?

I  connect the  rev 11.1 control board to my test bench  and the  4 mosfets did NOT blow up .     The LF driver LED do NOT light up .   Only 2  LED on the rev 11.1 control board light on steady with the test bench inverter power switch .     The rev 11.0 has 3 LED on steady .     The rev 10.3  has 4  LED on staedy .     The new  rev 11.3 control board  test good  but it  has only 2 LED on steady .      I do not want to blow up the good  24 mosfets in the 9000 kw Powerjack  so I may use the new rev 11.3 control board .    I like to know if anyone who has the rev 11.1  control board and how many LED is on steady .   

[RobertM]

22 hours ago, dickson said:

Did you test the control board?

I  connect the  rev 11.1 control board to my test bench  and the  4 mosfets did NOT blow up .     The LF driver LED do NOT light up .   Only 2  LED on the rev 11.1 control board light on steady with the test bench inverter power switch .     The rev 11.0 has 3 LED on steady .     The rev 10.3  has 4  LED on staedy .     The new  rev 11.3 control board  test good  but it  has only 2 LED on steady .      I do not want to blow up the good  24 mosfets in the 9000 kw Powerjack  so I may use the new rev 11.3 control board .    I like to know if anyone who has the rev 11.1  control board and how many LED is on steady .   

Would my December 2021 "8000" PJ AMG inverter  have the latest board revisions? I need to open it up and look, I suppose?

[dickson]

 I need to open it up and look, I suppose?

Powerjack  only make the rev 11.3 control board now .      Check to see if  your is rev 11.3 control board  .      Repair is difficult if your is rev 11.0 control board  or  if rev 11.1  control  board  .     The mainboard ribbon cable is different  for the rev 11.3 control board .       

[pilgrimvalley]

On 11/26/2022 at 6:15 PM, Sid Genetry Solar said:

Every single GS inverter shipped from China arrives in the States in a completely unusable state.  Transformer not wired, without the WiFi board, and with zero programming in the processor.  The factory can't even test that it runs before it goes out the door.  All final assembly and testing is Sean's responsibility.

Sean says he is no good at soldering so I hope more would be done at the factory with automated pick and place machines....

but lately it seems they have encountered delay after delay after delay in their delivery so good to buy from a eBay vendor with stock in Walnut California or from the new Lansing Michigan warehouse,,,

it is always amazing how in some countries they survive a simple life on a very small wage.....

in rural Bolivia South America many laborers are paid 9 bolivianos per hour which is (9bs/6.95bsper one US dollar = a mere $1.29 per hour)but a typical wage is called an obra(days work) costs 120 bs an includes the food for the day and is a 10 hour work day...so actually 12 Bs per hour plus probably 3-5 dollars for food also as a benefit...

in the USA I find it hard to find any worker with the inflation for less than 13 dollars per hour and most want 18 dollars or more, even the illegal immigrants which I can not employ...

I think Dickson scored a winner with the ASL6.5 transformer in the 9000 watt repairable inverter for 200 bucks....👌👍😎

 

[Sid Genetry Solar]

46 minutes ago, pilgrimvalley said:

Sean says he is no good at soldering so I hope more would be done at the factory with automated pick and place machines....

There's a huge difference between SMD assembly (standard with pick and place machines) vs hand-soldering through-hole parts (which generally are not done by machine).  Or soldering other items/connectors.

turns out that 70% of Sean's soldering issues were due to the fact that he was using lead-free solder.  (The other 30% would have been due to a very weak soldering iron.)  After we made that discovery and he got a roll of proper 60/40...wow, such an improvement!  For whatever reason, I have never been able to get lead-free solder to work in any form or fashion.

[pilgrimvalley]

it would still make sense to have more assembled by a factory that does it repetitive with good quality control if you ever find one....

I only use electrical solder for electrical work and have never used lead free solder for any electrical soldering....

I use lead free solder with a torch routinely in copper water pipes though...and with copper and brass solder joints in plumbing for the past 40 years....lead free solder requires the correct temperature and is more a pain in the axx to use for sure.... a learned skill.....practice practice.....the right tools make the difference

[dickson]

it would still make sense to have more assembled by a factory that does it repetitive  with good quality control if you ever find one.

Jack and his workers  is not the one   for good quality control   .   I  repair broken connection on ribbon cable  and finger-tight  screws  on wire connection  on output board   and miss wired  AC output board .     MY 9000 kw  PJ  works good  but  was not easy  .     IF  I   push the  start button  and not fix the wires  and the FETs will blow up  and  my inverter is a junk  Powerjack  .