/vr/ - Retro Games

I found this video, and I gotta say things aren't matching up. That's some fishy business going on with yours, OP.
https://www.youtube.com/watch?v=QF3BJw_J-YQ

What I find shows no such resistor, although from your pic it looks like that pin is soldered you ground. Is the leg lifted?

>>5855691
This one is the same PCB as yours, NUS-RMC-10. No resistor.

What the fuck could this fix be for? just checked and yes, the pin on the chip is lifted from the PCB, soldered directly to ground.

Should i just pop it in and see if it works?

>>5855718
The only thing I could think is that the pin originally went to ground and the trace it attaches to is damaged, but unless it went through a resistor to ground originally there would be no need for that, just a leg lift and a wire to ground. Odd.

What does the other side of the board look like?

>>5855731
looks completely clean like pic related, nothing suspicious, no signs of corrosion.

Im gonna test it, Perfect Dark will tell me if it works.

>>5855736
Ok Perfect Dark boots and detects the expansion pack, guess it actually works fine.

Finally ill be able to play Majora's Mask this weekend.

>>5855752
Good for you anon, good for you

>>5855736
>>5855752
If it works, that's good. I'm still confused as to why there is a resistor between what appears to be the Serial Input pin on the RAM and ground.

>>5855752
>majora's trash
lol what a fucking loser

>>5856405
one of the best games ever made

>>5856409
one of the worst opinions ever posted

>>5856413
there's still time for you to do better

>>5856415
but I already posted the objective truth about majora's trash

>>5856375
>what appears to be the Serial Input pin
it's gnd

>>5857808
Can you show me that datasheet? The one I'm looking at says pin 20 is Sin.

>>5857842
>>5857808
OP here, i checked with a meter and the pin on the chip that was lifted and soldered to one leg of the resistor goes to the vias i marked in pic related, from there then it goes to pin 4 (from right to left here >>5855692
) on the front side.

>>5857808
>>5857842
had a brainfart, please ignore >>5857808 and rape my face.

>>5857857
Could you test for me and see if Sout is also tied to gnd by default?

>>5857914
dont know what sout is.

Tell me which pins to test for continuity and ill do it.

>>5855663
It was hacked on at the factory to enable the tachyon uplink to Sentari. They bribed / blackmailed the foreman to have the workers them put that on there unbeknownst to Nintendo HQ, but knownst to us.

>>5858604
Two pins to the right on the RAM chip. If Sin is pin 20(the one with the resistor tied to it), then Sout will be pin 22. At least according to the datasheet.

I'm using this sheet here, but the pinout is the same as similar RDRAM chips.
http://www.digital-circuitry.com/IMAGES/NINTENDO/N64/DEV/SGI_Ultra64/DRAM/Datasheets/DSA2IH00127808.pdf

>>5859705
SO the pin i marked in red here? test if it has continuity to GND, ill do it when i get home.

are we about to have a major breakthrough here? some long lost tech?

>>5859849
No, just figuring out why that resistor was stuck there. I'm guessing they just used it in lieu of a wire, but not entirely sure why it would tie into ground.

>>5859809
Yes, that's the pin. Would be appreciated.

idiot here, is it possible it would've been an otherwise rejected unit, but this was a cheap and easy fix so it would pass QC?

>>5859849
Undoubtedly. The "resistor" is actually a special type of battery that can power autism for >9000 years.

>>5859920
>I'm guessing they just used it in lieu of a wire, but not entirely sure why it would tie into ground.
where does the trace on the n64-board go to? the rcp?
searched through some teardown-tutorials, but none have any pinout-schematics

>>5859920
>I'm guessing they just used it in lieu of a wire, but not entirely sure why it would tie into ground.
where does the trace on the n64-board go to? searched through some teardown-tutorials, but none have any pinout-schematics

>>5862119
Well, I haven't seen a clear pinout, but between the schematic of the N64, the RDRAM, and pictures of the expansion pak, I can probably put something together later on today.

>>5859920
>I'm guessing
And that's just one of the many reasons why this cringe thread is so pathetic

>>5863198
your shitpost didn't help, that's for sure.

>>5864105

>>5855663
Some times they find shit at the factory but don't want to toss an entire batch out so they do these small fixes. See some of the first model Sega Genesis consoles. Those have jumper wires all over inside them.

>>5864776
but this one got a resistor where no other expansion pak had a resistor.

I think that's a capacitor.
You can desolder it and measure its dc resistance to confirm.

>>5859085
Nice spaceballs reference

But seriously, it's just a pulldown resistor. they probably had a run of chips that worked fine except for having borderline voltage on that pin. The pulldown forces it into a defined logical state.

>>5859849
>are we about to have a major breakthrough here? some long lost tech?
Not sure if serious… But the answer is no.

>>5859939
>idiot here, is it possible it would've been an otherwise rejected unit, but this was a cheap and easy fix so it would pass QC?
This is essentially spot-on. You aren't an idiot, you're too smart for this thread (and likely this board).

I'm stunned that there are 37 replies and absolutely fucking no one could recognize a pulldown.

>>5866510
>I think that's a capacitor.
Kill yourself.

>>5864776
Better example is some sega CD units. (IIRC it's only model 2's that use a Samsung drive.
I also have a famicom somewhere with a corrective resistor like that, but I have five of them and I don't want to open them all to check which one it is.

My laptop is in a dock so the intake fan is NOT sucking up lint, before anyone says anything.

>>5866561
this thread is the dunning-kruger effect in action. it took 37 posts to get to the first one that identifies a literal electronics 101 circuit. maybe someone could argue that it's an ic decoupling cap, but that would be part of the original design, and i think the lead inductance would cause more harm than good

>>5866467
>i've seen every other expansion pak in the world

>>5866510
>I think
no. you don't

>>5866638
>maybe someone could argue that it's an ic decoupling cap
>my post is the dunning-kruger effect in action

>>5867228
>i've seen every other expansion pak in the world
you're free to give citations of another occurrence with a resistor added to it.

>>5868510
>make up obvious bullshit
>get laughed at
>p-p-prove me wrong
Cool kidlogic kid, but that's not the way it works

>repeats stuff people have already said in the thread
>"LOL I'M SO MUCH SMARTER THAN EVERYONE ELSE"
The LARP would be more believable if the guy actually posted something that wasn't already posted in this thread.

>>5870468
>SEETHING

>>5869403
>Lacks citation
>ad hominem
If you can't disprove it, its ok.

Any possibility this is a gamedev pack that was manually hacked for somed debugging in a specific project?

in that one guy's defense, nintendo sometimes used axial capacitors that look just like resistors
but yeah it's pretty cool to find an official nintendo bodge

>>5871572
>yeah it's pretty cool to find an official nintendo bodge
I have followed this thread since the beginning, only because this is interesting. I have not taken apart EVER expansion pack, but I certainly have taken apart and cleaned over 50 of them, and never seen an official fix-it. It would always be interesting to know why this fix was applied. I doubt we ever will, and it would be cool to see another like op's pop up in the wild. My guess is that it was a small batch error that had a simple fix. Perhaps it was even a one-off issue? Who knows?

>>5871406
>more kidlogic
>more illogic
>doubles down on stupid
Keep the keks coming kiddo

>>5871384
And he's been reduced to memes. That was quick. Inb4 "dialate", "have sex", or whatever the current meme response is.

>>5871872
ego intact

>>5871872
Here in /vr/ country, I believe the kneejerk insult is "Zoomer".

>>5871872
>seething intensifies

>>5855663
>>5855691
>>5855692
>>5855736
wtf this is a blue board, dont post naked shit

>>5872065
#HealthyAtEveryPitch

>>5855663
Dude! That's the rare NUS-007. The first Nintento DS built. The last one sold in the internet for $13,000.

>>5859705
checked that pin for continuity and it goes to ground.

Better pic if anyone is interested.

>>5875563
damn captcha.. OP here, been playing Majoras Mask for about 8 hours with no issues.

>>5875563
yeah, the only reason you have a discrete component going to ground on a digital chip is either to act as a pulldown resistor on a digital line (if nothing is driving the logic line, it drops to ground), or a decoupling capacitor on a power rail (to smooth out fluctuations in the power supply). no way that's a decoupling cap, so it must be a pulldown

>>5875647
>no way that's a decoupling cap
How do you know that?

>>5875820
Because it's not a fucking capacitor holy shit.

>>5875829
But how do you know it is not by only looking at a picture?

>>5875839
Being at all familiar with electronics

>>5875839

>>5875850
So, that chip there is being decoupled by a resistor, right?

>>5875820
>be retarded and claim it might be a decoupling
>get called a tard
>don't accept you're wrong
>don't learn and better yourself
>continue to embarrass yourself
Your autim level is >9000 brainlet

>>5875917
Literally retarded, literally.

>>5876374
>be retarded and claim that only resistors use axial package with color code bands
>get corrected and educated by someone not retarded
>be too retarded to realize you are retarded
>quadruple down on your retardation
This is a fine example of the Dunning–Kruger effect.

>>5875820
look at the trace sizes. the component is soldered to a skinny trace, so it's probably a digital line, and thus a resistor. decoupling caps are soldered between power rails and ground, which have to carry a lot of current and thus need fat traces, like the traces on the ends. Usually power pins on chips are on the corners too, so that's more evidence. plus it just looks like a resistor

>>5871423
>>5866561
>But seriously, it's just a pulldown resistor.
>>5871905
>I believe the kneejerk insult is "Zoomer
That only arose in the last three years or so. Back in 2015 I never saw that.
>>5875563
>>5866561
>But seriously, it's just a pulldown resistor.
>>5875820
>how do you know that?
Because it's fucking Electrical Engineering 101, and decoupling is totally unnecessary for digital logic. Decoupling is usually done on the output of a DAC or for communicating using alternating current (like RS232, since it uses both positive and negative voltages). Now ask yourself: why the fuck would a RAM cart use a DAC for literally anything?

First mention of a pullup/pulldown in my electronics textbook from 1989 is on page 75. That's 14 pages into the section on transistors, and the book is over 1000 pages long.
>>5875829
>Because it's not a fucking capacitor holy shit.
This.
>>5875839
>But how do you know it is not by only looking at a picture?
See >>5875850
>>5875917
OK lol you're trolling. That's the only explanation. Now I get it. Damn I'm autistic.

>>5875917
>>5876517
Follow up.
Note how that capacitor is marked C3, and there's a capacitor symbol underneath. They went out of their way to make sure everyone knew that it was a capacitor. Also notice how it's connecting ground to Vcc. There's no reason to do that with a resistor, thus a capacitor makes sense in that context since it's there to protect chips from rapidfire power cycling.

Easiest way to know for sure is of course to put a multimeter on it. But it's just a fucking resistor, seriously. Shut the fuck up.

>>5875917
Count the number of bands on that. Then count the number of bands on almost any resistor.
EIA color code for capacitors is 5 bands, the resistor (which is what it is) in OP is four bands.

>>5876517
>decoupling is totally unnecessary for digital logic.
This is not correct. Are you sure you are not confusing a decoupling capacitor (also called bypass capacitor) with capacitive coupling or something else?

>>5876450
These are good arguments. If you look at the back of the board it looks like some of capacitors are connected between ground and some middle pins of the chip. Also the datasheet posted shows that some middle pins are supply pins. Who knows whether the chip in the datasheet is the same that nintendo used but I don't think it is farfetched to think that some middle pins in the expansion pack could be supply pins that need bypassing.

What I don't agree is that just because the device looks like an axial resistor it should be a resistor. It is likely is a resistor but I think the best way to proceed is to desolder and measure it.

>>5876517
>OK lol you're trolling. That's the only explanation. Now I get it. Damn I'm autistic.
No. It was a rhetorical question in response to >>5875850 who says that he knows a resistor when he sees it. I posted a capacitor that looks like an axial resistor.

>>5876530
>Note how that capacitor is marked C3, and there's a capacitor symbol underneath
We have none of this in the OP, which is why I suggested to take out the thing and figure out what it is.
We don't even know if there's any logic for the thing being there. Maybe someone wanted to practice soldering or something,

>>5876550
Is this a sure way to tell? Some resistors have 5 or 6 bands. The capacitors in my bin are either 3 or 5 bands but maybe some manufacturer omits the temperature coefficient and sells 4 bands capacitors.

>>5876406
>be retarded and claim someone claimed something they never claimed
>get laughed at for your pathetic desperate attempts at damage control
>project like a mother fucker
>quadruple nigger down on your retardation
>provide a textbook example of a Dunning-Kruger autist
Your irony level is >9000, surpassed only by your projecting level.

>>5876728
>be too retarded to follow a thread
>be too retarded to be grateful when given intellectual charity
>as a result keep being retarded forever
>split the retard atom and sent moron particles backwards in time
>kill your retarded grandfather and create a time paradox

>>5876820
>being this BTFO
kek

>>5878604
>seething

>>5879278
The delusions of the millennial know no bounds

>>5861186
kek

seriously tho, just electrical engineering shtuff. wat makes the world go round. no big

>>5863198
>>>/b/

>>5864360
Coming to /vr/ with shit bait doesn't is low hanging fruit.

Oh Jr.

>>5876678
Yes, from common sense, or from desoldering /cutting one of the leads and measuring resistance across the leads.

>>5879453
>the zoomer cries out in pain

>>5880482
>when you fail so epically you have nothing left but projecting

>>5881383
>the zoomer in its natural habitat displays its faggotry for all to see

>>5881564
So you're saying you're a zoomer, not a millennial?

>>5882558
>the zoomer is confused by greentext, an ancient technology before its time

>>5866561
>spaceballs
that's The Last Starfighter, ya zoomer

>>5883051
I hope all that projecting makes you feel better about your fail. Sounds like you really need to get it out of your system.

>>5883373
>the zoomer tries out this "passive aggressive" thing xi read in his zoomer magazine

>>5855663
>Found an N64 expansion pack on the wild
>on "THE WILD"
> was it modified
for some reason your post gave me some sort of flash back trip of serial experiments lain and now theres some narration like that episode about conspiracy theories and the history of the wired but its just some beaner talking about modding his n64 and how he almost burned down his house because he left the soldering iron plugged in all day while playing golden eye with his brother and i see a house but its got way to many people staying there for 1 family

>>5883762
>the zommer projects his zoomer fetish in his typically zoomer way
Stay seething kiddo

>>5885431

>>5855663
it's the new S-HDMI graphics expansion everybody is talking about as off late, OP.
Get with the times!

>>5886435
>i'm not saying was aliens but it was a capacitor

>>5886435
Wow they're still supporting N64 these days? What a world.