Methodical Fault Finding - A Real Life Repair Example
ฝัง
- เผยแพร่เมื่อ 4 พ.ค. 2023
- I have a JBL EON 515XT Amplified Speaker for repair, it has Bass but no Treble. This could be due to a lot of reasons and I'm not particularly familiar with these speakers so the only way to diagnose the fault is by using a methodical approach and logical thinking to narrow the problem down to a specific faulty component. This one took me a little while but I got there in the end. Guys, to learn the lessons here you need to watch the video all the way through. Sure you can skip to the end to see what the fault was, but this will not help you when you're faced with a repair job on your own!
As used during this repair:
Get Solderstick at 20% OFF with discount code "RICHARD20" at www.solderstick.com/sale
I work in collaboration with:
The Electronics Channel (with Carlos and Detlef)
/ @theelectronicschannel
Gran Canaria Uncovered
/ @grancanariauncovered (with Detlef and Julie. Not electronics related)
Det Builds Stuff - / @detbuildsstuff8128 (Detlef)
Retro Upgrade - / @retroupgrade (Carlos)
For All Your PCB needs: free $5 discount coupon
www.pcbway.com/setinvite.aspx...
Equipment used in my videos. These are affiliate links, you pay the normal price and I make a small commission.
TEST METERS
Aneng AN8009
s.click.aliexpress.com/e/_DdW...
amzn.to/469ZgOS
www.banggood.com/custlink/mD3...
KM601
s.click.aliexpress.com/e/_DBw...
www.banggood.com/custlink/KD3...
VC480C+
s.click.aliexpress.com/e/_DEY...
amzn.to/3Q3LEz7
amzn.to/46tmNdo
MESR-100 ESR METER
amzn.to/3tiy8hK
amzn.to/3RwvejK
s.click.aliexpress.com/e/_Dmi...
XC6013L CAPACITOR METER
s.click.aliexpress.com/e/_DmX...
amzn.to/3t71Nul
amzn.to/3LDdcbO
TM-902C TEMPERATURE METER
s.click.aliexpress.com/e/_Dm9...
amzn.to/3LFzERv
amzn.to/3PTwuvW
FNB58 USB ANALYZER
s.click.aliexpress.com/e/_Dmd...
amzn.to/3tb1QW8
amzn.to/46oMn30
www.banggood.com/custlink/mKm...
PCI POST ANALYZER
s.click.aliexpress.com/e/_DBs...
amzn.to/46m9Gep
TL460S Plus PCI_E ANALYZER
s.click.aliexpress.com/e/_DnB...
amzn.to/3ZERvOs
MULTIMETER PROBE KIT KET05
s.click.aliexpress.com/e/_DE7...
OSCILLOSCOPES
FNIRSI 1014D
s.click.aliexpress.com/e/_DEz...
amzn.to/3RxMFk1
www.banggood.com/custlink/KKG...
FNIRSI DSO-TC3
s.click.aliexpress.com/e/_DC8...
amzn.to/3RBsgdS
www.banggood.com/custlink/Gm3...
FNIRSI DPOX180H
s.click.aliexpress.com/e/_DBX...
amzn.to/468oooT
www.banggood.com/custlink/GGG...
BENCH PSU
NPS3010W
s.click.aliexpress.com/e/_DDP...
amzn.to/3rxsuIf
www.banggood.com/custlink/3DD...
SOLDERING
T12 Station with M8 9501 Handle
s.click.aliexpress.com/e/_DFV...
amzn.to/3FdG8Ul
SUGON T26D
s.click.aliexpress.com/e/_DFx...
QUICK 861DW
s.click.aliexpress.com/e/_DDo...
amzn.to/3PBOKZH
amzn.to/3RCSqNh
PROS'KIT SS-331H
s.click.aliexpress.com/e/_DDo...
THERMAL CAMERA
Infiray P2 Pro
s.click.aliexpress.com/e/_Dmu...
amzn.to/457PgEb
www.banggood.com/custlink/DDG...
MICROSCOPES
Amscope Optical Microscope (copy)
s.click.aliexpress.com/e/_Dlh...
uk.banggood.com/custlink/mKGy...
amzn.to/4675Qp0
amzn.to/459uvrY
ANDONSTAR AD407
s.click.aliexpress.com/e/_Dl4...
amzn.to/3PSQKxJ
amzn.to/48sxej4
EEPROM Programming
TL866 II+
s.click.aliexpress.com/e/_Dls...
amzn.to/3RTCRB9
amzn.to/3LDu3Lu
CH341A
s.click.aliexpress.com/e/_Dk0...
amzn.to/48IZiir
If you would like to support this channel
You can send donations
www.paypal.com/paypalme/youtu...
You can subscribe to Patreon
/ learnelectronicsrepair
You can click Join to become a channel member
Thank you
Richard
![TREASURE - 'KING KONG' COMEBACK SPECIAL [THE TREASURE SHOW]](http://i.ytimg.com/vi/Jx1wyMaQzf0/mqdefault.jpg)
Get Solderstick at 20% OFF with discount code "RICHARD20" at
I'm going to say, up front and on the down low, that this comment is 100% unsolicited by Richard or anyone else but in the interest of Richard and his watchership - all of us - so that we get to enjoy much more of his brilliant content.
....'I'm gonna make a video on Op-amps...'. I look forward to that one too! :)
These are my favorite instructional video types .... real world troubleshooting and repair. Rich, your expertise and willingness to pass on your knowledge are greatly appreciated.
Wow this is amazingly informative, thank you! I've got some passive speakers here where the crossover has clearly burned out some resistors in the past. Someone's come along, bypassed the crossover, hot-glued some fat resistors to the horn and wired all that to the main driver. It's very much like the pre-existing repair here. I don't understand it at all yet, but watching your videos I'm gradually working towards having the confidence to start pulling things apart, following the signal path and testing components so I can find and (hopefully) fix the original fault that led to this butchery.
You re great!
Sincere thank you for another great addition to your growing, wonderful legacy of passing on knowledge.
It was great seeing you go through your troubleshooting process. Much thanks for making these videos!
Great video - and while I never really work on audio gear your techniques definitely taught me something.
Awesome video and a great troubleshooting process! Thanks for the video!
Yes, Mr.Richard I watch yur videos every day.. I like to learn opamp from yu..
Great video! Thanks!
HI Richard, Loved the video, very informative. I liked it so much that I subscribed....Keep up the good work.
I have a class D power amp and boy it has power and is very very efficient and is the best sounding amp i have ever had .....
Good job
Great video
Hi. Could you use a bigger and negatively translucent pointer? It would make it a lot clearer when you're directing our eye around a schematic.
Another great video, Richard. I love the systematic approach. Any news on when you plan to do part 2 of the ESR project? I thout your adeas for it were great.
Heya
That previous "repair," obviously done by someone who didn't know anything about amplifiers but could build a makeshift filter, just proves the old Dilbert saying: "A little knowledge is a dangerous thing."