Juki industrial sewing machine repair

[Titan-OX]

We now have a Juki DDL-5550-4

SC-120 controller
Type D1CHCS servo drive/Electronics box

The machine won't turn on and shows no signs of power after being plugged in. (It just didn't show any signs of life one morning according to the previous owner).
We suspect that something with the driver to be wrong. Hopefully we can just fix it but plan B is a new vdf motor controller.

What needs to be done

• sew a protective hood so it won't get all dusty.
• document the wiring
• afterwards unmount the driver and try to diagnose the problem
• Readable
• test (only slowly without oil
• find out what type of oil is needed
• buy oil
• refill with oil
  

[Titan-OX]

2024-12-01-15-23-45-088.mp4

[U1is]

Es gibt spezielles Industrienähmaschienen öl. Laut Juki soll "JUKI New Defrix Oil No.1" benutzt werden.
Beispielsweise:
https://www.ebay.de/itm/181984205523?chn=ps&_ul=DE&norover=1&mkevt=1&mkrid=707-134425-41852-0&mkcid=2&mkscid=101&itemid=181984205523&targetid=2359635454747&device=c&mktype=pla&googleloc=9041998&poi=&campaignid=21693910041&mkgroupid=167460653476&rlsatarget=pla-2359635454747&abcId=10028084&merchantid=112641190&gad_source=4

[U1is]

Ich hab mir sie mir am 02.12.2024 das erste mal angeschaut und versucht die offensichtlichsten Stellen zu überprüfen.

• Der Ein/ Ausschalter funktioniert
• Die Sicherung ist noch intakt
• Ich meine auch das der Motor Strom bekommt

Eventuell können wir uns überlegen die Nähmaschiene mal ohne die Automatik zu testen

[U1is]

[Titan-OX]

[Titan-OX]

F5 is blown. I replaced it and tested it. It blew again

[Titan-OX]

Thanks to Henrik and Jonah for finding a broken Transitor.
We need to buy a replacement and test it.

Henrik also advised to get cleaning brushes and clean the coroded spot on one of the PCBs and reapply a protective UV hardening coat of solderstop

[NitramLegov]

Can you get us a List of what needs to be ordered? If you send us shop links and quantites, we can work on ordering replacement parts (if it's not super expensive, but your post didn't Sound like it)

As usual: please no ebay links 😊

[Titan-OX]

The transistor (2SC3507 MATSUSHITA) is no longer being produced. I could only find listings from a UK ebay seller or china (ebay and aliexpress)

https://www.ebay.de/itm/191909281895
https://www.aliexpress.com/item/1005004146169121.html

[LukasFreeze]

So someone would have to buy it privately and donate the part?

…

On Fri, Jan 31, 2025, 10:14 Titan-OX ***@***.***> wrote: The transistor (2SC3507 MATSUSHITA) is no longer being produced. I could only find listings from a UK ebay seller or china (ebay and aliexpress) https://www.ebay.de/itm/191909281895 https://www.aliexpress.com/item/1005004146169121.html — Reply to this email directly, view it on GitHub <#330 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AEWXG263DLWEWHKOQWCSSOD2NM5I7AVCNFSM6AAAAABSZ4HXMKVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDMMRWG4YTSMZYGI> . You are receiving this because you are subscribed to this thread.Message ID: ***@***.***>

[NitramLegov]

What about the cleaning brushes and the hardening coat?

[Titan-OX]

brush: https://www.amazon.de/-/en/Cliney-Antistatic-Motherboard-Cleaning-Convenience/dp/B0DGD1QRT8
UV light: https://www.amazon.de/-/en/KieTeiiK-Upgrade-Curing-Purple-Repair/dp/B0CK7RG6XF
Soldermask: https://www.amazon.de/-/en/Soldering-KGX-900-Printing-Insulation-Protection/dp/B097KB8JW7

It would be cheaper directly from ali and they provide invoices with VAT
brush: https://www.aliexpress.com/item/4000817265551.html
soldermask: https://www.aliexpress.com/item/1005008077493554.html
UVlight: https://www.aliexpress.com/item/1005005560102189.html https://www.aliexpress.com/item/1005007646533589.html

[Titan-OX]

Can you order 2 of the transistors?
https://nikkoe.com/2sc3507-matsushita-panasonic-1000v-transistor-c3507-uk-company-since1983-68.html

[NitramLegov]

The point with both aliexpress and eBay is that they do not provide correct invoices.
eBay has an issue with putting the correct Billing Address on the invoice (even is you enter it correctly while ordering)
Aliexpress is also not able to provide correct invoices. "Invoice with VAT" is not enough in this case.

The Brush and UV-light you have proposed from Amazon have a similar issue :-( They are sold from a chinese company. Thus, amazon gives us a hint that we have to manually organize an invoice. This created a mess in the bookkeeping.

So, Unfortunately, we would have to do some research on other sellers for these or similar articles.

Nikkoe does also not allow me to enter a billing address during checkout :( It´s a pain!

I can check, what I can do here, but this will most likely take a while.

[Johannes09]

Mach die Platine doch mit Isopropanol und einem Wattestäbchen sauber – beides ist vorhanden. Zum Versiegeln kannst du Plastikspray verwenden, das ebenfalls da ist.

Als Ersatztransistor sollte sich auch einer eignen, der nicht exakt die gleiche Nummer trägt – entscheidend sind die inneren Werte. Zum Beispiel könnte ein BU508AW funktionieren. Ich habe mal zwei bestellt.