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Good work!

Also another issue when the machine is the load cell needs to be replaced. You need to check the resistance of the load cell to ensure the values are correct m. Message me if you need help with it

Check to ensure there are no damage to the display cable. Is the cable a flat cable? With time flat ribbon cables start to deteriorate. If you can take a picture of the Mainboard and the tension module where the cables are connected that will be great. Worse case scenario there may be a bad...

Hey dreameraver please post pics of the machine. Someone may be able to troubleshoot

https://photos.app.goo.gl/UMVZytZKY6s29THa9

Hello everyone! Hope everyone is doing well. I am trying to get an old Babolat 2502e/Star 4 to work again. The machine powers up without any difficulties, as well all functions work. The tension head does not move when I press the Yellow Button. These are the following steps I used to try to...

Hi Geoff Hope all is well. I saw that you own a Babolat Star 4 machine and Albert was able to help you fix the machine. I am having the same issue with my machine as the tension head does not move. I was wondering if you know the name of the transformer you bought years ago to fix the machine...

Thanks for the update. I hope your repair guy is not charging you too much money for the time diagnosing the issue. Just like Jeroenn mentioned the mainboard and offset board may be causing the issue. Sadly both components are hard to get.

Thanks for the update! Seems this is a tough issue to get it back in running condition. Weird they didn’t mention any issues with the board. Cross my fingers they will get it back up and running :)

No problem:) Here is the link which may help get the machine going: https://tt.tennis-warehouse.com/index.php?threads/babolat-2501-e-problem.547076/ Areas to check are the switches, relay, and of course the load cell.

Hey! Hope all is well. What’s seems to be the issue? I would recommend you try to adjust the offset as described on the article. I think @Renboy has a video that he can post for this procedure when he is free.

https://workswell-thermal-camera.com/pcb-inspection-by-thermal-imaging/

Sorry to hear the machine is down :(All I can say is we did your best to get it back and running. If you decide to bring it to a electronics repair store; let us know the store you decide to bring the machine for repairs, and the outcome. There may be many people having similar issues.

Hey renboy saw the thermal images last night. A majority of the parts on the main board need to be replaced. Too many hotspots especially on the transistors. I forgot to ask you when you were resetting the offest to 0.90v did you hear any beeps? If not the main board is defective and needs to...

@abllee2198 any thoughts on the cause of the tension head not moving?

Ahh yes the fuse. Check the slot near the power outlet and see if there is a slot where you can pop it open. You can confirm whether or not the fuse is dead.

@jeroenn troubleshooting is time consuming indeed but @Renboy hes getting close:) keep moving forward!

400 400

Sorry I mean 409ohms for input

Was thinking the same @jim e. The motor sounds like it’s going to go. After reading the results from the load cell sound like the values of red yellow, black green and black yellow are low. Output values should be at least 350ohms and input close to 409oms.

@Renboy here a video to confirm load cell is working

@jeronn something I learned in the past. If other components are extremely hot than others that can indicate a short circuit in the board. I would also test for continuity on the flat cable that runs from the load cell connecting to the board. Up @Renboy how he wants to proceed. He can return...

Cross my fingers the thermal cam will find any short circuits while you diagnose the issue. If you can either record or take a pic where you setting your multimeter to test the voltage.

My apologies renboy. You’re right no point of testing out the calibration if the head does not move. If you have a thermal heat camera you can use it to see which areas are producing the highest temperature. Perhaps there is a shot circuit in one of the two boards.

Calibration video for star 3 and star 4. Watch the video for 38 to 42 mins.

Sorry meant fourth photo

@abllee2198 can you shed some light on the issue at hand. @Renboy confirmed that the motor, microswitches, and relay are working. I see in his third photo the master link came off the chain. Not sure if that is causing the issue. Sorry to bother you once again.

@Renboy I wonder id if the potentiometer is dirty. It happened to my star 3 and I used rubbing alcohol to clean it. Problem resolved. Can you post pictures of the circuit board as well the load cell?