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Author Topic: Replacing flyback and caps on k7000 chassis  (Read 343 times)

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keilmillerjr

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Replacing flyback and caps on k7000 chassis
« on: February 02, 2020, 03:06:22 am »
I have a K7000 in my neo geo mvs. Flyback arced out. It was cool. It was scary. It was disappointing.

Everything I own is broken in some fashion. I bought a cap kit, flyback, friend gave me a new solder sucker, then project was on hold. I am finally ready to continue.

Whats your opinion on tools and materials needed to perform this job? Soldering station? Solder? Liquid flux? Cleaner? Anything else? Will grab a junk pcb and practice removing and resoldering components first.

Is either of these a good budget soldering stating station?

X-Tronic Model #3020-XTS Digital Display Soldering Iron Station - 10 Minute Sleep Function, Auto Cool Down, C/F Switch, Ergonomic Soldering Iron, Solder Holder, Brass Tip Cleaner with Cleaning Flux https://www.amazon.com/dp/B01DGZFSNE/ref=cm_sw_r_cp_api_i_IFQnEbNJKJ7NN

Yihua 939D+ Professional 75 Watt Digital Soldering Iron Station ESD SAFE F /C Switch with Extras - 3 Solder Tips, Lead-Free Solder Wire and Goot Wick https://www.amazon.com/dp/B07YSCBZ4F/ref=cm_sw_r_cp_api_i_NCQnEb5YCAG9R

princess prin prin

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Re: Replacing flyback and caps on k7000 chassis
« Reply #1 on: February 02, 2020, 09:42:27 am »
Chassis are not multilayer PCBs with plated through holes etc. A 60W iron and a solder sucker are all you need. if you can't do it with these basic tools, it's because of poor skills.

keilmillerjr

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Re: Replacing flyback and caps on k7000 chassis
« Reply #2 on: February 02, 2020, 09:58:56 am »
Chassis are not multilayer PCBs with plated through holes etc. A 60W iron and a solder sucker are all you need. if you can't do it with these basic tools, it's because of poor skills.

Theres other projects I have planned. I have a ---smurfy--- 60w iron I could use. Trying to set up good environment. If you cant make a proper response, its because of your poor attitude.

DudeRegular

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Re: Replacing flyback and caps on k7000 chassis
« Reply #3 on: February 02, 2020, 04:51:58 pm »
I prefer braid over a sucker if you don't have a fancy desoldering gun.

lilshawn

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Re: Replacing flyback and caps on k7000 chassis
« Reply #4 on: February 03, 2020, 02:23:38 pm »
In a pinch, I've soldered with a nail and a propane torch before... you can certainly solder with whatever you got there.

if you must buy a station...but a name brand one... weller, hakko,  etc. ... at least if you need tips or parts, there is no questions if it will fit/work.

behrmr

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Re: Replacing flyback and caps on k7000 chassis
« Reply #5 on: February 03, 2020, 02:55:12 pm »
I've been using a hakko soldering station with an Aoyue desoldering station for several years.  They are both very good and not super expensive and I've had zero issues with either one.  If you want an all-in-one check out the Aoyue 701A++ dual function solder and desolder station for $185.

MKFan4Life

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Re: Replacing flyback and caps on k7000 chassis
« Reply #6 on: March 22, 2020, 03:17:59 am »
I prefer braid over a sucker if you don't have a fancy desoldering gun.

I agree. The cheap bulbs work, but clog up often. Braid works better, but takes a bit of time. I finally bought a used pace soldering/desoldering station a few years ago, but sadly have had little time to use it (life and all!).

behrmr

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Re: Replacing flyback and caps on k7000 chassis
« Reply #7 on: March 22, 2020, 12:27:14 pm »
My concern about using solder wick vs a sucker or desoldering tool is that K7000's traces and solder pads are very delicate.  They will literally disintegrate in front of your eyes.  Whatever you use watch how much heat and how much time you dwell on a pad to remove the solder.  That's the concern with solder wick as people tend to use too much heat for too long (add a little liquid flux to help).  And do not try to just heat the pads and pull the caps out without removing solder as you will tear things up.  I only say this because I've had to re-repair a number of chassis where everything was burned to bits by the last guy.