Re: RICOH 2555 SC672
I've studied electronics, even built my own amplifiers, power supply units and other electronic equipment.
And I can honestly say that doing repairs to the controller and BCU boards found in the newer machines (6 years and newer) will require specialist skills and specialist equipment most of the time, just like what Slimslob said. I would not advise doing repairs yourself unless you are an absolute expert.
I also agree that controller boards are far more unreliable in the newer machines compared to the older 1s.
RICOH 2555 SC672
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Re: RICOH 2555 SC672
Two major things have happened:
Heavy metals like lead have been removed from solder and other components, which has made solder especially a little less reliable but the boards are less toxic.
Boards have gotten denser: compare a board from an older machine like a 1027 to a newer one and the old board looks almost primitive. The connections now almost require a microscope to find failures.
I have a few friends who've been in electronics manufacturing, according to them the fact that anything works as reliably as they generally do is almost miraculous considering the very small margins of error in the build process.
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Back in the day I used to do component level repair on consumer electronic boards and I would replace chips, capacitors, resistors and such. Now it's much harder and impossible in some cases.Leave a comment:
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Re: RICOH 2555 SC672
Heavy metals like lead have been removed from solder and other components, which has made solder especially a little less reliable but the boards are less toxic.
Boards have gotten denser: compare a board from an older machine like a 1027 to a newer one and the old board looks almost primitive. The connections now almost require a microscope to find failures.
I have a few friends who've been in electronics manufacturing, according to them the fact that anything works as reliably as they generally do is almost miraculous considering the very small margins of error in the build process.
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Re: RICOH 2555 SC672
I very much agree with your opinion. I gave it to the circuit board repairers. they don't dare to accept the repair because it's too new, they don't have a machine to tryLeave a comment:
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Re: RICOH 2555 SC672
The reliability of Ricoh controller boards has been getting progressively worse over the years. I suspect cheaper components being used to save money.Leave a comment:
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Re: RICOH 2555 SC672
It could have been something as easy as a cold solder joint on a connector to a defective custom component that you might not be able to source unless you want to purchase in lots of 100 or more. In addition most current PCB are multi-layer with plate through component holes. If you do not have the proper equipment for removing components you will damage the board.Leave a comment:
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Re: RICOH 2555 SC672
The only people that know what goes wrong with boards are the techs at the board repair places, like Hytec.Leave a comment:
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