Learn How To Repair Electronics Without Schematics. Practical PCB Circuit Board Repair
Here is an interesting one. So a guy came into the workshop clutching a large PCB and asked me if I could fix it *urgently* So let’s look at the process of undertaking this sort of repair, working out what the different sections of the PCB do and deciding which diagnostic method is most likely to result in a successful repair. Could you have fixed this PCB? Be honest with us all in the comments, and let us know if this video helped you or gave you more confidence with this sort of repair
I work in collaboration with:
The Electronics Channel (with Carlos and Detlef)
👉Click the link or enter the search code [AYA50X] on the AliExpress homepage. Don’t forget to enjoy extra savings with the exclusive discount codes below, just for fans like you!
🌟 Remember, these codes can be used on almost all items in selected countries on AliExpress, except for mobile phones.
Click my link to explore amazing products on AliExpress and use my codes for additional discounts!
😍 These codes are valid for selected products.
Discount Codes:
$10-$2:【IFPLEZ84】
$15-$3:【IFPBIXCA】
$30-$5:【IFPZWWSE】
$69-$10:【IFP11Q3U】
$99-$15:【IFPAMZAO】
$139-$25:【IFPDBYNM】
$179-$28:【8LEARN6】
$269-$45:【8LEARN7】
$349-$55:【8LEARN8】
$429-$60:【8LEARN9】
$569-$80:【8LEARN10】
Valid from 17 August 2025
For All Your PCB needs: free $5 discount coupon
Equipment used in my videos. These are affiliate links, you pay the normal price and I make a small commission.
TEST METERS
ANENG AN8009 MULITIMETER
KAIWEETS HT118E MULTIMETER
VC480C+ MILLIOHM METER
MESR-100 ESR METER
XC6013L CAPACITOR METER
TM-902C TEMPERATURE METER
LCR-T4 COMPONENT ANALYZER
FNB58 USB ANALYZER
PCI POST ANALYZER
TL460S PLUS PCI_E ANALYZER
TOOLTOP ET120MC2 SCOPE
FNIRSI 1014D SCOPE
NPS3010W 30V 10A PSU
T12 STATION WITH M8 9501 HANDLE
M8 9501 HANDLE
YIHUA 982 Soldering Station C210/C245
FNIRSI HS-02 PORTABLE SOLDERING C210/C245
QUICK 861DW
PROS’KIT SS-331H
INFIRAY P2 PRO IR CAMERA + MACRO LENS
TOOLTOP ET13S THERMAL CAMERA METER
ET13S MACRO LENS
OPTICAL MICROSCOPE
TOMLOV TM4K AF FLEX
TL866 II+ PROGRAMMER
CH341 PROGRAMMER
NC-559-ASM FLUX
DESOLDER BRAID (I use size 8045)
HX-T100 SOLDER (0.6MM)
ESD-11 TWEEZERS
Learn Electronics Repair is now on Discord! Come and join the fun, it’s free.
If you would like to support this channel
You can send donations
You can subscribe to Patreon
Or you can click Join to become a channel member
Thank you
Richard

For completeness on your awesome video, could you post the link to the youtube video where you found the resistor value.
ok
Waffle on
Short answer 100% yes. If man made it I can fix it. It only amounts to how much energy I choose to put into something.
I am surprised that you didn’t know that is a “Schiffler” sub circuit in the middle of the PCB.