Community repairs?

A Former User

Location: Cyprus
Contact: here

I can do rework, 99% of the gear, re-flow, stereoscope, hot air etc etc.

I do mac-book repairs mainly

My only fly in the ointment for me is that I will be at work (Saudi Arabia) for most of this year until October when im taking an extended work break, so I can have more time for personal family life and personal projects.

I happy to attempt repairs for those in the south of Europe.

Monster Delta

hi i have a duet wifi with a knackered atmel chip if anyone could replace it, i have the replacement part and im located in the uk so europe would be best. drop me a message. thankyou

dc42

@bearer said in Community repairs?:

Edit: Due to new customs rules all shipments will be subject to import fees and VAT making this very cost prohibitive for international users unless sender is registered for VOEC (VAT On E-Commerce) which is unlikely I guess. See below for other EU and US options.

I don't know the rules for Norway specifically, but in the past I have sent goods from here in the UK to outside the EU for repair with the outgoing customs declaration saying "Faulty goods sent for repair, no commercial value" and the returned customs declaration "Faulty good returned after repair" along with the value of the repair invoice (and a copy of the invoice if the value is high enough to need it). Then VAT is only payable on the repair. Unfortunately the courier company or Post office also charges me a fee of £10 to £22 to collect the VAT.

A Former User

@dc42 said in Community repairs?:

@bearer said in Community repairs?:

Edit: Due to new customs rules all shipments will be subject to import fees and VAT making this very cost prohibitive for international users unless sender is registered for VOEC (VAT On E-Commerce) which is unlikely I guess. See below for other EU and US options.

I don't know the rules for Norway specifically, but in the past I have sent goods from here in the UK to outside the EU for repair with the outgoing customs declaration saying "Faulty goods sent for repair, no commercial value" and the returned customs declaration "Faulty good returned after repair" along with the value of the repair invoice (and a copy of the invoice if the value is high enough to need it). Then VAT is only payable on the repair. Unfortunately the courier company or Post office also charges me a fee of £10 to £22 to collect the VAT.

I did look into that and as an individual I'd have to pay the VAT + fees on import, and apply to have the VAT refunded on export. Refund being subject to minimum amount and a fee so in practical terms you pay the import and thats it. (With the free import limit removed, anything that isn't a document will have be processed for import regardless of value. So a 5p screw would still be charged £16.50 in fees + 25% VAT)

Slightly different rules for businesses depending on their tax credit status, if its a common occurrence a business can provide alternative security and not have anything payable unless they fail to export the items within a given time. (24 months i believe).

edit: eBay does pose an interesting loophole; as of 01.04.2020 anything purchased with delivery to Norway will have 25% VAT added on checkout and a VOEC number will be put on the shipment resulting in no fees upon arrival; so if the item value on ebay is sufficiently low the 25% VAT will not make up a significant value (in theory, not tested)

Luckypriest

I'm in the US but would someone be willing to look at my issue?

https://forum.duet3d.com/topic/17716/possibly-fried-duet-with-an-in-spec-power-supply/30

Also any idea on price for the shipping ETC? We can discuss repair amount once you have the board. This is a sad, sad day.

Luckypriest

@Luckypriest Or at least give me recommendations / links for the parts and a friend of mine and I might try to wing it for fun.

droftarts

First post edited to add Taylor (@THP) to list.

Ian

BoA

Outstanding idea. I am located in Poland and have a reflow oven, hot air station (IMO more suitable to re-work jobs) and experiance in using it. I would be more than happy to fix some boards.

PCR

Can make Germany

A Former User

Fantastic, welcome aboard - i'll update the first post shortly!

droftarts

@BoA Added to first post.
@PCR Are you offering to do repairs? If so, please post a little about your experience and equipment.

Ian

pungoboy

Hey all, just saw this post and thought I'd throw my hat in the ring.

Location: New York City, US
Contact: Through forum

I've done logic board repair professionally in the past, like others I'm kitted out with the stereoscope, hot air, all manner of soldering gear etc etc. Also have a suite of test gear for more advanced troubleshooting (scope, 4.5 digit meter, function gen). 2.5 years experience microsoldering, and I've been doing through hole for much longer. Willing to take a look at anything for the cost of shipping both ways.

A Former User

@pungoboy I'll edit the first post and link down to this!

Oh, and you is awesome!

MikeDC

Anyone in the UK then I can replace drivers and fets, I already replace 80pin Atmels in telescope mounts so these would be no problem for me

A Former User

@MikeDC awesome; I'll update the first post and add you to the overview. Thanks!

gnatman

@dc42 said in Community repairs?:

@bearer said in Community repairs?:

I'm also sitting on some fancy rework gear and wondering if it would be beneficial for the community and environment to try and have these boards fixed by the community, including myself.

Yes, definitely! The most common repairs are replacing blown drivers (although those usually happen within the first few days so they are covered by the warranty), and blown fan mosfets. After that comes failed WiFi modules (and users wanting to replace the original module by the external antenna version), and occasionally failed processors - although when the processor has failed, unless it's on a v1.0 Duet WiFi then it's normally due to overvoltage on the +3.3V rail, so other components have probably failed too.

BTW we've shipped tens of thousands of Duets, so they are more reliable than you might think from seeing forum posts about failed ones.

I just recently started having an issue with my Duet 2 Wifi. I went to do a print the other day and started to smell something. I checked the power wires going to the Duet from power supply and the ones from power supply to the Duex5, I only smell it when the Bed is heating up. I can even hear something a little bit when it first starts to heat the bed. I know this topic was a little old but I was wondering if something needs to be replaced.

Phaedrux

@gnatman said in Community repairs?:

@dc42 said in Community repairs?:

@bearer said in Community repairs?:

I'm also sitting on some fancy rework gear and wondering if it would be beneficial for the community and environment to try and have these boards fixed by the community, including myself.

Yes, definitely! The most common repairs are replacing blown drivers (although those usually happen within the first few days so they are covered by the warranty), and blown fan mosfets. After that comes failed WiFi modules (and users wanting to replace the original module by the external antenna version), and occasionally failed processors - although when the processor has failed, unless it's on a v1.0 Duet WiFi then it's normally due to overvoltage on the +3.3V rail, so other components have probably failed too.

BTW we've shipped tens of thousands of Duets, so they are more reliable than you might think from seeing forum posts about failed ones.

I just recently started having an issue with my Duet 2 Wifi. I went to do a print the other day and started to smell something. I checked the power wires going to the Duet from power supply and the ones from power supply to the Duex5, I only smell it when the Bed is heating up. I can even hear something a little bit when it first starts to heat the bed. I know this topic was a little old but I was wondering if something needs to be replaced.

Might be best to start a new thread. This one is more dedicated to finding someone to repair something specifically. Please start a new thread with some more specifics of your setup and we can try and help troubleshoot what is going on. I'd also suggest perhaps disconnecting everything from the board and giving it all a good visual inspection before trying to use it again. Burning smells are never good and you want to try and limit the damage. See if you can find what burnt.

BoA

I am wondering how this "community repairs" idea is woking out.
Are there any stats how many community repairs been done so far?

I recently replaced one of the stepper drivers in duet2.
Here are some pics from the process:

Some protection for plastic connectors and electrolytic caps:
PCB after removing chip and cleaning up old solder:
New chip soldered just before putting heatsink on, and sending board back:

rishab

Great! thanks for sharing.

BoA

Sharing was just extra. I was wondering how this works for others. And are there any stats / info how many boards were repaired by "community repairs team"