Found - Guwange Blue Label EEPROM(s?)

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ChrisBEANS
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Found - Guwange Blue Label EEPROM(s?)

Post by ChrisBEANS »

As title.

I’m a cretin, so don’t know how many are required (I could obviously google, but if you’re responding to this you already know!), and I’d also be double grateful if they were idiot proof labelled too.

I am just barely competent enough to swap them over myself though. I can tell you’re impressed!

Been messing about with it in MiSTer and I prefer it over the OG version. Can’t quite put my finger on why, but I definitely do.

Let me know if you can help!
Last edited by ChrisBEANS on June 9th, 2025, 3:19 pm, edited 1 time in total.
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Re: WTB - Guwange Blue Label EEPROM(s?)

Post by cools »

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Re: WTB - Guwange Blue Label EEPROM(s?)

Post by thegreathopper »

It’s simple to swap, I used to have the blue version option.

I thought it was one chip but could be two.
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Re: WTB - Guwange Blue Label EEPROM(s?)

Post by ChrisBEANS »

cools wrote: June 8th, 2025, 7:09 pm https://m.youtube.com/watch?v=zA52uNzx7Y4
You’re a monster!!
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Re: WTB - Guwange Blue Label EEPROM(s?)

Post by zak »

It's 2 roms:

https://ikotsu.blogspot.com/2012/08/guw ... -roms.html

You just need a kind soul to burn them for you.
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Re: WTB - Guwange Blue Label EEPROM(s?)

Post by ChrisBEANS »

zak wrote: June 8th, 2025, 8:56 pm It's 2 roms:

https://ikotsu.blogspot.com/2012/08/guw ... -roms.html

You just need a kind soul to burn them for you.
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Re: WTB - Guwange Blue Label EEPROM(s?)

Post by Neo'nate »

Buy an eprom chip remover it makes the process so much easier - https://www.ebay.co.uk/itm/333939192131
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Re: WTB - Guwange Blue Label EEPROM(s?)

Post by Neo'nate »

Reach out to forum member 'Kold666' who will burn you one.
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Re: WTB - Guwange Blue Label EEPROM(s?)

Post by ChrisBEANS »

Neo'nate wrote: June 9th, 2025, 1:28 pm Reach out to forum member 'Kold666' who will burn you one.
Nice one, will do!
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Re: WTB - Guwange Blue Label EEPROM(s?)

Post by zak »

Neo'nate wrote: June 9th, 2025, 1:26 pm Buy an eprom chip remover it makes the process so much easier - https://www.ebay.co.uk/itm/333939192131
this is my favourite tool for chip removal:

https://uk.farnell.com/wiha/43706/chip- ... derack-GLB
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Re: Found - Guwange Blue Label EEPROM(s?)

Post by SuperPang »

I've always just lifted them with a screwdriver but now that PCBs are stupid money I think I'll invest in one of those.
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Re: Found - Guwange Blue Label EEPROM(s?)

Post by ChrisBEANS »

SuperPang wrote: June 9th, 2025, 5:38 pm I've always just lifted them with a screwdriver but now that PCBs are stupid money I think I'll invest in one of those.
Butter knife FTW... right?!

Leftover butter helps slide the pins back in afterwards.
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Re: Found - Guwange Blue Label EEPROM(s?)

Post by SuperPang »

Actually, you're right. That's exactly what I used to use!
Been a while.
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Re: Found - Guwange Blue Label EEPROM(s?)

Post by geotrig »

Hate them chip removers I've done more damage to chips using those chip removers than with anything else, always use this nylon toggle pick https://amzn.eu/d/fwcI570 like those
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Re: Found - Guwange Blue Label EEPROM(s?)

Post by cools »

FFS Amazon thinks I'm Irish now
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Re: Found - Guwange Blue Label EEPROM(s?)

Post by SquidDude »

geotrig wrote: June 9th, 2025, 6:49 pm Hate them chip removers I've done more damage to chips using those chip removers than with anything else, always use this nylon toggle pick https://amzn.eu/d/fwcI570 like those
I've damaged a rusty chip or two with those dual prong pullers too, nowadays I tend to just use a flat head.
Gotta choose between risking damage to the chip, or damage to the socket.
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Re: Found - Guwange Blue Label EEPROM(s?)

Post by ChrisBEANS »

Can someone pick a definitive please?

Otherwise I really am going with a used butter knife!

(Full disclosure, I’ve always used a flathead from a precision screwdriver set. Seemed fine??)
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Re: Found - Guwange Blue Label EEPROM(s?)

Post by geotrig »

cools wrote: June 9th, 2025, 7:52 pm FFS Amazon thinks I'm Irish now
Is there much difference :awe:
:shifty: that may be the link I posted Amazon keep trying to force me over to it
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Re: Found - Guwange Blue Label EEPROM(s?)

Post by zak »

ChrisBEANS wrote: June 9th, 2025, 8:08 pm Can someone pick a definitive please?

Otherwise I really am going with a used butter knife!

(Full disclosure, I’ve always used a flathead from a precision screwdriver set. Seemed fine??)
Go with this:

https://uk.farnell.com/wiha/43706/chip- ... derack-GLB

It's perfect for the job. I've rom swapped dozens of System 1 and System 2 boards using that tool and never damaged anything (they have a lot of chips to swap!).

@SquidDude is right about that dual prong. It's too fiddly and never worked right for me.