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/vr/ - Retro Games

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5792698 No.5792698 [Reply] [Original]

I work for a local retro game store repairing all sorts of things, and this particular Model 1 Genesis is puzzling me a bit. I found these two inductors soldered onto odd places on the board, I'm not sure as to the purpose of this mod. Does anyone here have experience with such a modification? The console fails to boot when turned on, and I figure its likely because of this as nothing else seems to be wrong.

Also console mod/repair general thread I guess

>> No.5793023

>>5792698
>these two inductors

Are you talking about the capacitors in the picture?

>> No.5793039

>>5793023
Kek. OP BTFO.

>> No.5793075

>>5792698
RF chokes. Not modded.

>> No.5793253

>>5792698
>I work for a local retro game store repairing all sorts of things
>The console fails to boot when turned on, and I figure its likely because of this as nothing else seems to be wrong.
You work repairing retro game consoles, and you can't be bothered to use a multimeter? If you actually did electronic repair, you would follow the power, then follow the video if power is going where it should. How long have you spent trying to repair this thing using just visual inspection?

>> No.5793287
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5793287

>>5792698
>I work for a local retro game store repairing all sorts of things
From that question it's pretty obvious you're not very good at your job

>> No.5793601

>>5792698
You'd best not let slip what store you work for, or I'll personally call them and tell them how unqualified you are to do that sort of work.

>> No.5793626

>>5792698
anyone find his store yet

>> No.5793659
File: 10 KB, 123x127, 1452737908697.gif [View same] [iqdb] [saucenao] [google]
5793659

>>5793023
AC, phone posting.
>>5793626
>>5793601
Shaking in my boots
>>5793075
>scraped traces with a poor solder job to install extra components
Rep, fix, whatever it was, it is a mod.
>>5793253
Unfortunately a lot of my tools were lost due to an ex boyfriend tossing them out instead of storing them like he told me. I've been slowly gathering a new toolchest over time, and the multimeters one I have been borrowing from a friend for some time, I just don't have it at the moment. A lot of my job involves simple trace repairs, and I've successfully fixed consoles modded and stock alike with general retro knowledge, no multimeter needed, among all the jobs which I do use one for, and I am quite good at my job. Right now, since the friend whos multimeter I've been borrowing is leaving for an extended period. I will have to buy my own soon to work on this. I literally opened it last night, its just gotten me curious about what exactly it is for.

It is not stock, it has traces scraped up in order to solder to the copper, and one going to the accessory port is what especially baffles me. I intend to remove these and get it to boot without them, but I want to know what they would have been installed for.

What useless posts.

>> No.5793665

>>5792698
You must be really shitty at your job.

>> No.5793678

>>5793659
Literally just go buy a cheap multimeter tf is the problem?

>> No.5793683

>>5793659
Not knowing the pinouts but one side of both caps are obviously to ground, they are probably decoupling capacitors. They should improve the voltage regulation to the chips they serve by reducing ripple.

>I big repair faggot I know what I'm doing
>hey guys what are these inductors, I mean capacitors.
>whats a decoupling cap?

>> No.5793686

>>5793659
The cheap multimeter needed for basic console repairs can be gotten for less than $20. Quit fucking LARPing. You could also use a homemade continuity tester if you weren't LARPing and actually knew anything about electronics, or build your own for less than 5$ of materials.

>> No.5793693
File: 3.19 MB, 4128x2322, 20160818_183234.jpg [View same] [iqdb] [saucenao] [google]
5793693

It's a factory mod. Sega never stopped tweaking their hardware even between revisions.

>> No.5793721

>>5793659

You could've done at least a little homework on the SEGA IC and connector beforehand instead of expecting us to do it for you. From the looks of it the two caps were probably put there as lowpass filters, especially when you consider that the particular pin on the IC is GND and the other lead is on OSC1 which is 53.693Mhz, which a quick search would reveal is a frequencey required to generate an NTSC signal, confirming what >>5793075 said.

>a retro repair store with no multimeter in sight

This is a basic instrument that costs a few bucks at the hardware store, isn't not like having to borrow an oscilloscope from a friend's coworker's uncle's aunt in order to perform some special investigation...

>> No.5793748

>>5793721
I'd been trying to since last night, but okay. also I'm literally using their soldering iron for the work, they didn't have a multimeter and were using absurdly thick leadless solder. Its a bit of a tight operation, but they pay me and I turn in fixed childrens toys.
>>5793678
I'm not a neet, have bills to pay, and am barely making it by right about now. The game store is my second job, I can't usually afford new tools which is why its taken me so long and made me borrow tools left and right to get my work done.
>>5793693
That was a hunch, but they scraped up so much solder mask and the soldering poor enough that I suspected it was a user change.

Good god vr is shit, later nerds

>> No.5793813

>>5793075
>>5793023
Oh he really meant the ceramic capacitors. Could be a factory fix to meet RF regulations.

>> No.5793829

>>5792698
dumb nigger is the leg of the cap laying across the traces?

>> No.5793845

>>5793813
It is, OP would know if they actually looked at a lot of Genesis's before, OP is just LARPing as a repair tech. FFS, the moron doesn't even have a multimeter because $20 required tool for repairs is TOO EXPENSIVE.

>> No.5793864

>>5793845
OP would know if they had looked at basically any pre-Saturn Sega hardware. Sega is notorious for this shit. The 32X in particular has tons of factory hack job fixes.

>> No.5793871

>>5793864
I thought the 32X WAS a factory hack job fix?

>> No.5793874

>>5793871
I mean I’d call it more of a corporate hack job fix, but the factory played their part too.

>> No.5793878

>>5793748
It is you who is shit at the job.

>> No.5794161
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5794161

>>5793748
>Good god vr is shit, later nerds

>> No.5794195

>>5793748
nigga you can get a fucking multimeter from harbor freight for like $10 that does the job. what the fuck

>> No.5794718
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5794718

>>5793748
Please never come back

>> No.5795970

OP made a fool of himself and got so mad he had to leave lol

>> No.5796229

>>5795970

Op may be a fool, but you are all filthy double niggers

>> No.5796471

>>5792698
>i larp for the fun of embarrassing myself
I also enjoy you embarrassing yourself

>> No.5796714

>>5793659
>an ex boyfriend tossing them out instead of storing them like he told me.
Why are faggots such attention whores?

>> No.5796716

>>5793748
Harbor Freight Tools
https://www.harborfreight.com/7-Function-Digital-Multimeter-63759.html
$6.39
Even less with coupon.
KYS OP.

>> No.5796721

Instead of larping like OP, I admit my ignorance in terms of retro hardware maintenance. Where's a good place to begin studying?

>> No.5796771

>>5796721
Since you aren't a homo:

Get a soldering iron(one where you can buy replacement tips), flux, de-soldering braid(or bulb if you really prefer that), and some proper solder(no acid-core shit, that's for lead pipes). Maybe get a more tapered tip if you got something too wide or thick to work with. Get some cheap wire, old damaged PC PSU's are great for this. Get a cheap multimeter.

Got some broken electronics that you have no plan of trying to save or repair? Practice removing things without torching the PCB or ripping the pads or traces off the fucking board. Check youtube videos on soldering/de-soldering electronics. There's tons of decent videos out there. Once you are good at taking things out, try soldering a wire from one empty pad to another, then using the multimeter to check your work.

You aren't likely to be de-soldering 80-pin CPUs anytime soon, but with a little practice you should be able to do a number of basic modifications and repairs. Replacing burnt out standard components like capacitors is piss easy, replacing burnt out standard components like SMD capacitors is risky if you have a shaky hand.

>> No.5798210

>>5796771
This is all really good advice. I approve.

>> No.5798339

>>5793659
It's a useless board m8.
Was created for no decent reason.

>> No.5798359

>>5793748
>Good god vr is shit
You're the guy who had to come to 4chan for help doing his job.

>> No.5798368

>>5796771
>>5798210
For anyone trying to get into soldering i highly recommending giving Dave's tutorial series a watch
https://www.youtube.com/watch?v=J5Sb21qbpEQ

>> No.5798562

>>5798368
I recommend pace soldering #1
https://www.youtube.com/playlist?list=PL926EC0F1F93C1837

Dave from eevblog is god, so is mr. Carlson's lab, Louis rossman is also interesting because he just dies so much soldering and you can see so many different techniques

>> No.5798617

All of this madness could have been avoided had OP just asked a genuine question instead of larping like a tremendous faggot..

>> No.5799076

>>5793659
GAMER GIRL GO HOME

>> No.5801238

>>5793659
If you're a girl, send nudes and I'll buy a multi meter if a faggot please leave