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50/50 he will be back on here soon asking how to unclog print heads...

A soldering iron won't get enough heat into it, and if it did it would melt the brown head mount around it. There is also very little space to get an iron in there without damaging the head manifold as well. The photo on the OPs post shows the gap between the head and the edge of the head...

Absolutely Jim ! I do actually use ( legitimate ) Jetbest inks and have for years, and have never had a problem with them. Would I change to a complete unknown brand for the sake of saving $20 on a cartridge ?? Unless you are printing out massive amounts of work, ink costs are pretty much...

Jetbest don't sell on Ali Express. What you have bought is 'fake' chinese ink, which is why it is a lot cheaper. It may well work fine, it may clog your heads, who knows....

9 times out of 10 when people start asking stuff like that what they mean is 'can you tell me who you get to do them so I can try and go to them direct and get it cheaper'.... The same as when they ask about vinyl and inks, because they read on some forum you should only use these specific...

I imagine after 9 years they aren't all that worried about it...

I have never seen a head screw loctited in! There would be no reason to do it as the screws don't need to be that tight. Some copper grease on the screw would be a better idea to stop it seizing. Mind you, you never know who has been in there working on it in the past !

Ok the lines should not be empty. You need to find out why ink is not getting to the heads. Start at the cartridge dock, there is a thin needled that goes into the cartridge, this needs to be completely clear. Also check the nut and o-ring that connects to the dock. If this is leaking air it...

What we need to remember is the OP is working in a very tiny space. There isn't room to get big tools in there or start using dremels or grinding things. It is also holding down a delicate print head that can be easily damaged internally by any impact around it. Add to this it is through a...

You can pick up computers and laptops that will run XP fine very cheap on ebay, and should also have the correct connection.

Ah ok, not so risky then :)

https://www.solventinkjet.com/product-page/roland-dx4-print-head-solvent member on here and sells genuine heads.

If you are paying less than around $500 then they are either a scam site ( Mitrapring and pretty much all the indonesian ones who won't let you pay by card as they know they will get charged back when nothing turns up. ) or they are 'refurbished' ones if they are from china ( i.e. second hand or...

They probably have after 3 years....

No way to get a dremel into the space. You literally have a few mm's either side. Even with an extension fitted you won't get it anywhere close. You are also pretty much working blind so could easily damage the head. The only way to remove is to drill off the head of the screw so you can get the...

You can try a head soak but it probably won't make any difference. Even if flushed for storage after 4 years it is unlikely to work correctly without a lot of work.

You may also find when drilling it out that you damage the brown plastic holder the head fixes too. These can be found on ebay too

Definitely! Hitting it with a hammer is likely to cause damage to the heads, and if not will bend the carriage as it's not very thick metal, and you would never be able to straighten it again. Searching on ebay for roland head carriage there are a few sellers who have them listed for various...

Realistically you need to replace the bad heads.

They are an absolute pain to get out! ( I speak from experience ) as there is very little room to get any sort of pliers or extractors onto them The only real option is to drill off the head of the screw, then remove the heads, remove the head carriage and hope you can get some pliers onto the...