This Pandora BOX doesn't work! | Can I FIX It?

This Pandora's Box DX 9800 is faulty and appears to have no power. The LED lights come on, but there is no display, and there's no sound coming from the internal speaker.
Let's see if we can work out what's wrong with it and FIX it!
Hope you enjoy!
Steve
PS. I'm not an expert in repairs at all. I do this for fun, and it may not be the best or safest way to go about repairing broken stuff. I'm pretty good at melting plastic though. Please don't copy me - I'm an idiot.
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[@zKaltern]

Sometimes Dave.. you just gotta go with the reflow....

[@StezStixFix]

😂

[@hteekay]

....... get out

[@zKaltern]

@@hteekay Nope I'm here all week 😁

[@davidrobertson5700]

I will

[@svenriedel6696]

If a short disappears and turns into a rising resistance, chances are your multimtr (sic) is charging a cap somewhere

[@Isekai_Fan]

I'm glad someone else said this. Multimeters inject voltage and small current into a circuit to determine the readings. This why it is hard to determine the readings you are seeing without knowing what they are supposed to be. Inductors will always show as low resistances as they are designed to filter/condition current, when used in conjunction with a resistor and capacitor, they create a frequency filter.

[@dudewhoareu]

You make these calls and second guess yourself thinking it was luck but you are a very intelligent guy and you have learned so much over the years you need to give yourself more credit! I do love how you stay humble tho. Such an awesome guy!

[@imaginitivity7853]

There's no resisting a zero ohm resistor! Your face when that worked should be your channel icon! Great honest reaction

[@danieltornqvist6062]

Spectacular fix! 😊 Regarding the short/no short; You might be charging a capacitor with your multimeter. (Think of the multimeter as a very small bench power supply.) So the capscitor flows back and makes it look like a short for a moment Thats one of the many reasons its hard to measure things in circuit.

[@wesjb94]

Steve. I don't know where these beats come from but I love them. I was bobbing my head at work subconsciously with this video on in the background. I forgot I was listening to a song about your viewers for a min.

[@mK_Dx]

Seems like a crawler went under the chip and fried itself, the body parts shorted something until the reflow cleared everything.

[@Rapha2587]

Steve, you look absolutely adorable with this shirt! It suits you ☺

[@devttyUSB0]

"I'll probably do more harm than good. [ .. ] Let's reflow it." :D Yay! It worked!

[@StezStixFix]

Couldn't resist! I thought it was worth a go!

[@ev1ltrix369]

@@StezStixFix i know how it feel , did that on my xbox one x retimer chip did work for a few months till it die again. but on xbox it's a common issue, i do the same freaking ask myself a lot while doing electronics repair/projects can't help myself but try. LOl good video cheers

[@brendaneichler5244]

@@StezStixFix Was it a zero ohm resistor after all? /s

[@AlderKertor]

@@StezStixFix Almost as hard to resist as a 0 ohm resistor

[@jaketzi8816]

Couple of things to remind yourself in situation like that; It was already not working when you started. If it is not working at all, you can't make it work less.

[@babelinfocalypse8118]

That irrepressible smile at 21:49 was so sweet and defines why we do stuff like this

[@danielhulan3058]

Man Steve, you are getting good at repairing this stuff. Your videos are an anticipated highlight of my weekends. Keep'em coming man. I love it.

[@Worldwidenigespam]

You are the hero of resistors marked zero.

[@pixelpuppy]

you could tell he was so surprised he didn't even say "GET IN THERE!"

[@JustMatt87]

You want to know something? When I first started watching this channel, those patreon songs were such 🔥🔥🔥 that I thought you were paying a musician to make it for you. It probably took at least like maybe around 10 videos before I realized it was you 😂

[@ronny332]

7:07 your multimeter has to inject voltage and a small amount of current to the system. this can charge up a few capacitors. and resistance is technically a voltage drop. the resistance of your multimeter is pretty high, so there is just a little little current when measuring a resistance. so the multimeter is reading the voltage drop, that's available in the circuit.That's also the reason why often measured resistances go up and down while you're reading them. 9:05 Coils: coils are frequency dependent. Just measuring the resistance is just not always enough. If the leads inside a coils are touching, you still read 0 Ohm, but the frequency related resistance is not the same as before.

[@sparkyprojects]

Do this as a test, it should explain why you get continuity that disappearsd Grab a random capacitor, test for resistance on lowest range, you should see a near short that changes resistance the longer you are connected, now reverse the leads, you'll get the same When you test for continuity, you are charging capacitors, leave the leads on longer if it looks like a short when testing. You need an LCR meter to check coils, prferably out of circuit

[@michaelthompson7637]

Way to go Steve! Yo man, a win is a win. Truth be told, I'm always rooting for ya. Can't wait for the next one.

[@djgaryc]

9:52 The disappointment on Steve's face with his own puns cracked me up. 🤣🤣🤣

[@wisher21uk]

Brilliant fix Steve well done glad the reflow worked 😊

[@CIubDuck]

Wow, a bad BGA solder! You don't see those too often, knowing how the factories work! Great repair!

[@steverae68]

Love you videos - the surprise on your face when things work is great….. well done, I’d still replace the internams with a pi5 ❤

[@SpartanX360]

Trust in the flow Dave!!!

[@MrMurdock2021]

That was the most luckiest fix I ever seen. so awesome Dave I love it ❤🎉 congratulations

[@simonlunt353]

You must have the magic touch steve well done 😊

[@gizmo1252000]

hahahaha we all smiled when it worked . very nice steve :)

[@stgeordie2638]

"Take that Marian" - another classic StezStix Fix quote!

[@Nobe_Oddy]

EXCELLENT WORK!!!

[@Jesselovespinball]

Nice work Steve ! Get in !

[@Zobbster]

That is some impressive work there, Steve!

[@nbaua3454]

I see your videos from around a year now.. I love you fixing the "stupid" things 😅

[@chrisgebben2043]

excellent work as usual steve sometimes it can be simplicity even when its not obvious sometimes stuff need reflow when you don't even realize it

[@DeathInTheSnow]

Must be tempting to see if reflowing like that would fix some of the other projects you've had to shelve in the past. Reflow compilation video? :D Can I get a _RE_ flow! ...sorry.

[@edfletcher2404]

Another awesome video. Always entertaining and love how excited you get when your fixes work. Ha!

[@shermansheepherda8488]

Excellent job young Padawan.

[@Ewock1973]

I celebrated with you after the reflow! Thank you for another great video.

[@garrycowan4394]

Snatches victory from the jaws of defeat once more 😂

[@crossfadeking]

Loving your pc background. Instant nostalgia

[@chris_stacey]

Best outro. Ever. 👍

[@mrchrome5403]

Believe in youre self more pal we all love youre repairs keep it up pal thankyou 👌

[@zachgothard1582]

Love you video steve make my day keep up the good work

[@tbuddydog]

that was a great outcome for sure

[@drawnSHORT]

"This thing is so big, I dont know how I am going to film it...." - Glad you did. Ta! I'm off to reflow all of the things..

[@CapitalNick]

Some more of that fibrous material came out when you re-flowed the main chip. 20:40 - right hand side of the chip.

[@MartyCa]

Love the "Phatt Island wharf" background on your computer.

[@RobSchofield]

@ 11:44 - it is a measure of inductance, 2R2 means 2.2uH (micro Henries). The resistance across the coil will be very small: the only time (!) the resistance is important is if the coil has gone open-circuit (high resistance).

[@bpalpha]

Good job dude.

[@diYotamCh]

It is fuseless to resist a zero ohm resistor ... Love your videos... Thank you for your content...

[@Idontlikethisever]

Love this guy 😂

[@Flakwell]

love the nirvana cover.

[@zedcarr6128]

11:40 xRx values are in micro Henries (μH) Three digit values are in nano Henries (nH) or micro Henries (μH), depending on manufacturers choice First two digits are the value Third digit is the multiplier (or number of zeros added to the value) If there is an R, its acts as a decimal point, and there is no multiplier Examples: 472 = 47*102nH = 4700nH = 4.7μH (Coilcraft) 472 = 47*102μH = 4700μH = 4.7mH (Bourns) 4R7 = 4.7μH

[@mirabilis]

The battle continue.

[@RobisonRacing68]

A nice long video.... I love it when they are about 30 mins long :)

[@exidy-yt]

nicely done, sir. I strongly suspected the HDMI input myself, mainly because we didn't see you inspect it I guess. Glad it's working though, those pandora boxes are some fun cool things for portable head-to-head arcade goodness.

[@chrispike7249]

Another good fix there Steve 👍 - Stupid Pandora Box 😄

[@bigdoguk9845]

You the man 😊

[@themaskedturnip]

Love the shirt!

[@lexpee]

Good job

[@maxedoutmegablith6473]

Steve, best I remember and I might be wrong but when checking coils, you need a meter that reads henry's and micro henry's. Coils are like that wire you use to make jumpers it has a coating on the wire that makes up the coil. Often times, they get hot, melt the coating and dead short. Using a meter that has henry's on it might help you. Idk.

[@Okurka.]

You opened Pandora's box.

[@stevenwheat3621]

Oh the knee slappers!!

[@Okurka.]

@@stevenwheat3621 Sorry I stole your joke.

[@hugegamer5988]

As others have said: Capacitance and inductance are temporary energy storage. Putting your probe on a board can cause current to flow, filling up a capacitance on the board, and beep but stop when it’s full. Just like using a hose with a rubber gasket across it, it can only stretch so far and flow stops or it keeps going and something breaks.

[@BargainBarons]

Today's rap was above par my friend! Good one! 👍👍 Fans in Canada.

[@andymouse]

Short no short, charging a cap but is usually visible or switching on a MOSFET so leads the right way around Sir!! Inductors (coils) basically are a dead short at DC so hard to measure unless they are open but at AC its another kettle of fish, you would need to test at about 100 Khz AC. Resetting the trans optical wave differential oscillators time vector circuitry using heat was a cracking idea !.....cheers.

[@mossabDiae]

I genuinely celebrated when it worked x) Moral of the fix "Clean hair debris before doing anything "

[@chrisj2848]

Battle Continue! 😎

[@StezStixFix]

Haha 😅

[@MrJDNJ]

I believe those coils are measured in micro-henries and the generic electronic parts/transistor testers/identifier should be able to verify the value. (The measurement involves determining Inductance of the coil (by using an applied voltage), so a measurement of continuity doesn't really show the value of the micro-henry).

[@steelplasma256]

Something basic to keep in mind; Most parts tested in-circuit have different results when removed and tested off circuit. Especially don't trust resistance readings while in-circuit, electricity always follows the path of least resistance.

[@LOrealHardly]

7:10 Likely a capacitor charging up off the meter..!

[@gbwomble1570]

well done

[@willproctor7301]

I always think with reflows, it's the memory chips nearby that get the benefit. Worth a shot either way. Nice

[@Emulation_Inflation]

Nice.

[@ralphj4012]

Well done. The only way to test inductors properly (in my opinion) is out of circuit (unless you have a schematic or another device to compare it, you never know what else is connected). Continuity (not open circuit) using Ohms etc, inductance (shorted turns etc) using an LCR meter.

[@jonathanwhiteside6092]

Take the win Steve :)

[@Rukyr99]

That’s a mighty fine shirt, sir!

[@karlpron]

Double Dragon. I remember that from arcades. Two dudes fighting through the streets in coop.

[@riparaggi]

stupid.... box! excellent repair

[@TragicMike]

Its a good job King and King rhyme Steve 😂

[@timehunter9467]

That’s crazy, it was a good idea replacing the cracked coil anyway but a reflow working was a cool fix.

[@pabloascencio7397]

Hey man, great fix! Are you sure that replacement coil fits under that heatsink? The main chip might be overheating after a while for not making appropriate contact.

[@the3sounds]

Big bottomed coils, they make the rocking world go round

[@franckozon]

Nice

[@robot5663]

Now reflow the tv!!! Another great video brother

[@jed2055]

I know your Huapar broke and youse fixed it. Good fix vid that one too btw. I want one as the equivalent Flir is ridiculously higher priced (they aren't worth it imo) but the price for the Huapar has moved further north since your fixed-it video. More like £360+ after vat.

[@waleed9128]

You should have checked that ic with the thermal camera to see if the heat decreased after the reflow

[@hartpa]

I honestly depends on these videos for my sanity, thank you. Hate the adverts though but hey ho. I've bought loads of what you use to do, I have no idea what yet lol

[@thebaldconvict]

Looking for one of these portable screens, which one do you use? I need one that does both USB C and HDMI, oh and most of them unless is a noname one don't seem to have a headphone socket. Sorry to be a pain but you list all your kit but that came on the screen and I thought I'd ask!

[@Ariannus]

I'm wondering if that dinky little aluminum plate just isn't a big enough heatsink for that Rockchip and it had a broken solder ball from heating and cooling.

[@flyinryanfpv]

I'd of liked to see the thermal temp on the Rockchip after you reflowed it, I bet the temp dropped on it lol. Cheers 🍻

[@diamonddave2622]

It's amazing how a modern quad core arm chip can do the same job as the insane chip count of an old school arcade machine

[@dmitchell1713]

You remind me of Pat Benitar,just the era city lights

[@silabar5751]

​ @StezStixFix Have you actually checked whether the new choke is blocking the cooling plate? Not that the chip no longer touches the heatsink?

[@GordoYoshi]

Recomend to add termal pad to the heat sink ! Or update the heat sink !

[@tonysquires8207]

Single entendre is working fine 😂

[@blue11471]

BATTLE CONTINUE

[@zorko8920]

absolutely love your content! You’re an internet gem!

[@lasvegasira]

Is the outer case metal? Because if you check for shorts with the board resting on a metallic surface, you could easily have everything register as a short.

[@crunchyfrog555]

I would guess if you're getting a short then going back and checking and it's not there, your power from your multimeter is charging either a coil or something in circuit to cause that issue. Iirc, EEVBlog has spoken about such things in the past.

[@brendaneichler5244]

8:21 I think the better catchphrase might be "I have zero resistance to a zero ohm resistor"

[@steelplasma256]

You really should aquire some Lead-free solder paste for SMD rework. Makes rework a million times easier.

[@Mark_Linford]

YAY ! 😁

[@FrankJCarver]

There's always hope in the Pandora Box.