Mini Maxx Tuner Sent to us in Pieces. Was the repair a waste of time ?

[@downesg]

Two suggestions: 1. Pause the video at 26:42, upper left, that looks like a broken trace right above the silkscreen for '3'; and 2) use your Rigol oscilloscope to measure if that crystal, X1, that you replaced is being excited by the microcontroller. Some LCDs, either go all white/clear or all black when no valid video is presented to them. There is a slight possibility that that much current sunk through the pins of that microcontroller has damaged it. With no clock, that Microcontroller can't initialize or execute its firmware.

[@frankcarpenetti5776]

I agree, I have not yet encountered a faulty crystal as of yet, those microcontrollers can really confuse a person from my experience, especially with no schematic or firmware availability? I would let this one go Alex?

[@worroSfOretsevraH]

How do you explain the chime? Button press tunes?

[@zaprodk]

@@worroSfOretsevraH Exactly. The oscillator is working, otherwise there would be NO signs of life. So the oscillator is good!

[@ErickBuildsStuff]

At 9:11 one of the pins of crystal oscillator is broken off on donor board. Your explanation combined with this might be the probable cause.

[@zaprodk]

@@ErickBuildsStuff No, it is working just fine. The LED backlight is dimming just fine up and down during boot. Without the crystal oscillator running, the MCU wouldn't run code/boot.

[@majdinj]

@9:11 Pin no. 2 of DCP1505 is broken on donor board. Silk screen says ox1, so I think it is clock oscillator. It connects to microcontroller next to it

[@ekremovzet]

THAT'S IT !!! Well noticed

[@-Primer-]

Looks like that DCP1505 connects to VSS and OSC1/CLKIN/RC12 of the dsPIC33FJ256MC710 Microchip Digital Signal Controller. Page 9 of the "dsPIC33FJXXXMCX06/X08/X10" Data Sheet

[@rancid_]

Always appreciate the no-fix videos, the amount of care Alex puts into things that come in so poor such as this shows how much he wants to help every single customer.

[@shinokami007]

we learn from our mistakes and failures ;)

[@stevegraflund1873]

I am a EE by schooling but sit and watch these and your knowledge and skills with amazement. I could not do what you do. I can always feel your frustration at the end of a video when you sigh and say tell me what you think.

[@oliverbockler1094]

9:12 you lost One leg of the donor Part

[@pandrosik]

It did look that way.

[@chihofung6860]

That component appears to be a resonator, which provides clocks to the microcontroller. The leg (the upper left?) might be actually the solder but Alex may check the soldered component for the possibly detached leg.

[@chireaionut8473]

he did lost a leg there ... that is not solder...

[@zaprodk]

@@chireaionut8473 No he didn't. The pins are attached like on a QFN-package. The don't just fall off like BGA-pads.

[@nadimtarek1344]

Thumbs up for anyone who enjoyed the video even though it was a no / partial fix , good job Alex , you did your best and we can tell from behind our screens , you can't fake such thing 🙂

[@alank616]

Yes we need to appreciate Alex's videos, there's always a chance to learn more from each video 🇦🇺

[@nobuckle40]

Your meticulous trouble shooting skills are impeccable. I learn every time I watch. Thank you.

[@devonwilson5776]

Greetings. It is always a great pleasure watching you and listening to you as you perform the miracle carrying out your work with the precision of an orthopedic surgeon. I also enjoy the fact that your videos are interwoven with little historical snippets and jokes like "charging $100.00 for each second of guess work." It is absolutely brilliant.

[@sajibsutradhar973]

Please check the screen connector pin again 20-21 from right

[@ishkhan2501]

you missed soldering pin number 4 from left - check video 15:34. Great work Alex الله يحفظك

[@Hefty54]

I just watched the show (Analyze This) and I see where you got the phrase (Your the Boss of all Bosses) they say it in the show. It caught me off guard when I heard it as I watch all your youtube videos and you say it almost every time. So keep calling him the Boss of all Bosses. Your stream makes be want to be a tech repairmen. You make most of us think positive about the word. You Can Do It.

[@ThomasGabrielsen]

We can't always win. I appreciate you sharing the video anyway. Troubleshooting can be tedious and time-consuming, especially when you don't have the schematic for the part you're working on.

[@gostorlu7344]

Hi, I think the hot part is xtall. The heating of this part may indicate a malfunction in the microcontroller. The backlight works because the dc-dc converter circuit and the LDO regulator can generate voltage.

[@awaitingthetrumpetcall4529]

Alex is working on a repair. Class is in session.

[@TheDurdane]

Maybe it is an idea to compare the traces that go to the pins of the connector, with those of the donor board. Maybe not all the pins (where there is no pad) are not a no connect. I.e. because it would have to go to the other side of the board, or what not. Or maybe there is a discontinuity between one of the pads and the tracks, because that old connector was really a Hiroshima.

[@AndreaPizzatoYT]

Or the customer trying to resolder the connector has cooked the big chips on the other side of the board

[@sonjakavalut]

​@@thomasandrews9355 Only body death is definitely...

[@norfolkngood8960]

@@sonjakavalut not true😉

[@LuisSalazar-jo8ro]

that solder transfer was amazing

[@RetroTechCorner]

@9:12 it looks like the crystal/oscillator pin has broken off (could be the light though, not sure)... Perhaps try another oscillator..?

[@mariusmicsa8863]

Am I the only one concerned about Alex no longer mentioning the 9’th dimension? Maybe he found it and will now have spare parts for all eternity 😅

[@igrewold]

man you reminded me of the old days esp TVs when manufacturers used to have test points numbered on board And the device had schematics, manuals, parts easy to replace, chips DIP, everything was piece of cake now I don't even know what this device does, maybe it reads OBD II data from car computer(uC/uP) then change certain values I think the 5th dimension reachable in a nonlinear algebriac way, had there been schematics, firmware, all the works

[@TechProFury]

He mentioned it on the last video i believe.

[@lolsypussy]

has moved to the 10th

[@mrBDeye]

It is mentioned when a part flies off the board or tweezers.

[@fuzzymcuppets6167]

Alex has seen all the horrors there is to see in the 9th dimension and returned to tell us about it....

[@Byq13]

9:48 Microchip on the left has black spot/mark.

[@shinokami007]

21:02 thanks goodness i thought you were going to ignore it

[@KenShipman]

The ninth dimension is in my shop. I took a tiny screw off the back of an HP Envy laptop and poof it was gone. I looked all over the bench, I couldn't find it. I took the 2nd screw off and it too just disappeared from the tip of my magnetic screwdriver. They were both stuck to the chassis about 2 inches away on the underside (so I didn't see them). I guess it has a powerful unshielded magnet for the speakers on this laptop. After the repair was done It was fun trying to get them back in. As soon as I approached the laptop with the screw perched on the end of the screwdriver it would whisk the screw away like a magic trick. I had to hold it on there with my finger. =)

[@norfolkngood8960]

It was abducted by an army of odd socks who worship an idol made of belly button fluff

[@byronwatkins2565]

Might it be quicker to fix the "donor board?"

[@bblod4896]

Looking forward to part II. Thanks for the video.

[@yosup89]

Well done Sir

[@bblod4896]

At 17:12, I was yelling at the screen, "bent pin on the replacement connector, #20 from the right". 🤣

[@williamreitinger8978]

Very impressive Alex

[@kinnymonster]

Solid, just like the repair man. 😎

[@shamsalfaisal]

Came in for repair.

[@nasersiddiquee7253]

Wonderful way to find the problem :D

[@blazetechstuff]

customer sends you lego, means they couldnt figure it out themselves

[@MrArmadaskier4123]

Alex, I only got 5 minutes into your latest CPS video before it got removed. What happened?

[@stephenhood2948]

I'm going to have to get a couple rolls of your solder wick. The stuff we use at work just frays into an absolute mess. You can see the stuff you are using is a much tighter weave and would clearly work much better.

[@thomashenden71]

Now that is something to enjoy - send Alex what is really an electronics kit and ask him to "repair" it! 😂

[@re-fix9678]

Nice❤

[@Kamel7659]

Tanks for vidéo French tv ❤❤❤❤

[@JHammersticks11]

Awesome trick there with the alcohol to see what's hot. Never seen that one before! 🤯

[@prodigyaustralia]

what happened to cps video

[@tim.martin]

I was halfway through watching, too bad it's gone, was interesting AF. My guess is advice from a lawyer said "take it down until this is resolved". For sure Alex wants to share it with us, as much as I wanna see the second half of it.

[@andrasszabo7386]

The screens are not good because there are filters on its ribbon cable that are soldered to the wrong position by default. At least in my cases when I ordered those screens. I have a cheap mini pocket oscilloscope that uses the same screen and I drop it(and break it) all the time.

[@freddykreuger1371]

Good work 💪 👏

[@mikehigham23]

Wild thought.... Those 4 not connected pins on the screen connecter - the missing pads - are you sure they're not required to be shorted together - on in pairs even? Just check another board for anything odd in that area..

[@mikeanderson1994]

Maybe the 3 no connect trace's need to be connected to ground ??

[@ejeckk]

The plot thickens. Looking forward to part 2.

[@richardbell146]

Awesome work

[@coctailrob]

The pin that was bent, was it bent inside the connector also or just on the top? The no-connect pins might not be connected to the board but perhaps they are supposed to be connected together in some way?

[@excdnforces4035]

wow thats is a work of art!

[@nussysnake9933]

When I used to repair barcode scanning phones at my old job, sometimes the screens we had to place into them didn't work (they turned white like these Mini Maxx Tuners) until we flashed an updated firmware on the board because the screens themselves were "newer" than what the board had programmed into it. Do you think there is a way to flash the Mini Maxx board via an app on your computer? (We updated the Android phones via an ADP connection to our computers and afterwards the screens would work)

[@fouadmida2230]

I think you should change the component in 6:18 that you found hot maybe gone bad due to over heat , nice job as always.

[@MrWez420]

does'nt have a polarized layer over original does it? once changed lcd in a fire hd or something and it displayed white without polarized layer

[@bornagain2641]

thank u Alex.

[@fu4383]

I love your videos man win or lose

[@vettepicking]

I would compare the oem screens with the aftermarket screens and look for differences under the scope and you could maybe make them work.......

[@volvo09]

The broken screen was still white, even though it was cracked it didn't look like it was being sent an image.

[@vettepicking]

@volvo09 he said all past units had white screens with the aftermarket screens, then worked perfect with a oem screen. Im not referring to this unit in particular

[@Auburn7543]

@vettepicking The first screen I believe (the broken one) is the OEM . It was white also except where broken in the center

[@vettepicking]

@Auburn7543 not what im talkin about...

[@cglinks29]

i think the first component you took of the donor board one off the pads came off the component and was still on the donor board

[@lookitskazzy]

I wonder if trying to swap the flash chip with the FW on it from another donor board is worth a try. It's possible it got fried or corrupted somehow and that is what is preventing the unit from starting up.

[@MrBradleykeith]

I think that the dsPIC33FJ256 chip that the "XO1 DSP 1505 oscillator that was short" drives is faulty. No data the getting to the screen from the processor

[@oneandonlytyler1]

although they are no connect ,in 17.23 when you took of replacement connector it showed them being connected somewhere?

[@ljd09032]

What's the hot air temp set at?

[@maku143]

Eager to know the fault for white screen. Waiting to see Part - 2 soon.

[@ST1CKF1SHGAMING]

I was hoping to see an update on the C.P.S video but see its no longer up. Hope those scammers get caught.

[@SilenceWillNotBeTolerated]

He took it private.

[@RejectedManiac]

Could it be the missing connector mounting pads on the sides of the connector are ground?

[@ristemilkov8497]

Any update on this? I also think that some of ripped pads on the connector are not grounded they may be connected somewhere.

[@tayfunmehmettamer8999]

May I know your camera model?

[@CryptoMiningTurtle]

This is truly amazing seeing him do this wish I had the patience 😅😅😅

[@timeskipf]

Its not about the patience it justs makes you more motivated to solve the puzzle

[@RECO69011]

Where can I find the directions that show the easiest way to take H&S or bulldog tuner apart ? Thanks

[@steveng5503]

I messed about with something similar and hit a dead end with it. I returned it back and it turned out a couple of pins inside the HDMI port were shorted. So I took it back in replaced the port and it worked. When probing the board for shorts I missed it. Possibly as port traces directly back to processor data lines. I guess sometimes the simple things are missed if one is focused hard on the issue, the more time invested into such a fix then down the hole we go. Still a 👍 from me. ✌️👍

[@RangerX3X]

Perhaps the bent pin on the connector that was straightened is the issue.

[@rodhester2166]

That was some crazy good soldering.. Awesome job..

[@stephenhood2948]

I have a question for Alex, or anyone else that does this sort of work. I solder camera cables onto USBs for medical devices at my job. They will not allow us to apply flux, just use flux cored solder when soldering very small insulated wires to the USB pads. The problem is you have to add solder to add flux if you get a dry joint, and these pads and wires are small enough to have to be soldered under a microscope. I have tried to ask my supervisor why this is and all I ever get is "Because we told you to". Is there a reason you can't add paste flux when soldering insulated wires?? When you touch up such a small solder joint with more solder it makes such a mess and it seems to me it would be so much easier to just add a touch of flux and apply some heat. I have saw badly corroded USBs on older devices that are in for service, I wonder if that is what they are trying to avoid??

[@MoooHamMad]

You always have to clean leftover flux with alcohol. Flux corrodes metal.

[@zaprodk]

@@MoooHamMad Depends. There is flux'es that you need to wash off, others are "no clean" flux'es.

[@what31620]

They deleted the last video?

[@ST1CKF1SHGAMING]

Yea it sucks was hoping for an update, wanted to see how a known scammer justifies their BS

[@mihaip90-n4y]

if you have a functioning board lying around or an easy-fix board is it not possible to swap the whole thing?

[@Jason-zh7wo]

Good luck i hope you find the problem 🙏

[@TheOtlc56]

How often dose that happen

[@manojgairexettri1213]

Check the support pad 😊

[@jgemmell2823]

Are manufactures coming up with their own part numbers for components? I could find nothing on that 5-legged component. DCP1505 L301

[@tiloktrc]

Love how you work.Sometimes no fix are better and interesting then fixes

[@TheMossberger1]

So Alex, how did soldering the other screen into the connector go? lol 22:45 Another great video my friend!

[@zaprodk]

That's the first time i've seen a crystal oscillator fail shorted! - It's not a "chip" as such.

[@richysradioroom]

I was watching a 2 year old vid of yours. You had a bad zero ohm resistor. I work on boards almost daily and have never come a crossed a bad zero ohm. Have I just been lucky all these years? thanks.

[@vishwajha]

One trace seems to be broken above the '3' mark (left side) at 26.45 time of the video

[@stanislavlattenberg]

If the short circuit was on the crystal oscillator, it is definitely after the processor

[@KorAllRBare]

Does the far Err-um ca have Brightness or Contrast control and what are the setings? APU I dropped a like...

[@kgerakopoulos]

When you replaced the screen connector the 20th upper pin from the right was not looking good

[@fidobacsi]

please check X1 component from other donor board.

[@edups3307]

Alex, I got my first hot air station a Yihua 8786DI. I desoldered and soldered a switch potentiometer for a car air con successfully. Then I moved to a problematic motherboard which kills ram and tried to desolder the corresponding mosfets but I couldn't do it. I stopped because pitting is starting to form beneath the tiny mosfet. I played with the air speed and raised the temperature all the way to 480 C. I used basic rosin flux paste and put some leaded solder on the legs. Nothing helped. What do?

[@edups3307]

@Christos seems like it

[@jonathansnow5198]

Why don't you throw away the old screens that you marked with an x?

[@ilanbinkovitch6054]

You need to keep a "known good" screen , otherwise it might me the board .

[@ericwills7748]

How for you to replace the CPU socket on a ASRock x99 taichi ?

[@ShawnA560]

Just use two wires to complete the circuit for the coil. The coil is possibly a noise filter.

[@Frè-Za]

Awesome

[@mrBDeye]

Every second that we guess is $100 dollars. I like that joke !

[@charlieswager8808]

if the components from the donor board are not damaged you can transfer everything to it and check if it works

[@PatricioRomero_xumi]

he'd have to check since he blasted it from below to get the connector :(

[@taskinyucekurt]

If it does have a driver chip take it from donor one n give it a try. Some has single chip for everything so you can replace it too, probably chip has a fault inside. Could be filters too.

[@suryavanshib]

Awesome ✌🏻✌🏻✌🏻

[@ronlevin2339]

what is L301 ?? voltage regulator ?

[@gile849]

probably but wo knows without measureing. 1,8, 2,5, or 3,3V...

[@zaprodk]

Yes, LDO.

[@Master_2024]

Dear friend , thank you for your videos , actually we do like your video , but we don't have time for seeing you repairing laptops and other devices , unless you teach us how to repair and help the community of repair guys, it would be great if you explain and teach us the repairs method , we are happy for you for doing good repair , but we want to repair too and we want to learn too , so please save us time and start your teacher character, it will be grateful move from you , thanks again

[@panteaflorin]

I feel that pain from the whistle .

[@kpelectronics]

I think the part you replaced its a cristal, and I think when cristal goes shorted its because main chip is bad

[@ThejasonJaw5442]

Visual inspection is key- testing - when in doubt - They should leave it the professionals

[@WinrichNaujoks]

What's a mini maxx tuner?

[@zaprodk]

You don't have access to Google where you live?

[@volvo09]

A car tuner... for changing the fuel code and sometimes transmission shift code in whatever vehicle it supports.

[@WayneSallee-comTech]

Communist Google shadow-banned my post.

[@WayneSallee-comTech]

@@waynesallee-com The video about the suitcase on the lawn and the scram.

[@gavinrhodes3022]

hi mate where are you based only asking because i have an nvidia gt1050 ti i think it os my dog ripped the hdmi cable out of the back witch snapped the port on the card so then i thought i could us dvi connector from card to monitor and still no display