Sonos Sub main PCB - R37 resistor burnt (reopen)
[copy]
I saw a previous thread regarding this failure with burnt R37 on a Sonos sub main PCB, but it was closed perhaps due to inactivity. However, I was wondering if any other users also faced the same issue and possibly have an idea of the possible cause to this failure. I like to repair my unit, as the companion Sonos beam is still working fine. I bought the set in 2019, I have forgotten what generation that is, maybe someone here who is well versed with Sonos product could help me identify.
[new OC]
Have ordered replacement SMT parts since some of the parts are now end of life from the manufacturers of the components.
Details
┌─────┬───────────────────────────────────────┬─────┬────────────┐
│ Ref │ Part │ Qty │ Ext. price │
├─────┼───────────────────────────────────────┼─────┼────────────┤
│ D15 │ Diodes B280-13-F │ 2 │ $1.74 │
├─────┼───────────────────────────────────────┼─────┼────────────┤
│ Q10 │ Diodes ZXMP10A13FQTA │ 2 │ $2.88 │
├─────┼───────────────────────────────────────┼─────┼────────────┤
│ Q16 │ onsemi MMBT2907ALT1G │ 2 │ $0.32 │
├─────┼───────────────────────────────────────┼─────┼────────────┤
│ C85 │ KEMET C1210C105K1RACTU (substitute) │ 2 │ $2.30 │
├─────┼───────────────────────────────────────┼─────┼────────────┤
│ R77 │ Yageo RC1206FR-071RL (1 Ω, 1206, ¼ W) │ 10 │ $0.47 │
├─────┼───────────────────────────────────────┼─────┼────────────┤
│ R37 │ Panasonic ERJ-3EKF1001V (substitute) │ 10 │ $0.22 │
└─────┴───────────────────────────────────────┴─────┴────────────┘
Thanks to : TheSchnibble for the Original parts list and the original thread:
Check out the Video repair link here:
Cart for those buying it from Mouser :
https://www.mouser.com/en/Tools/Project/Share?AccessID=99b3560b3e
reference guide for the TI 5001 controller :
https://www.ti.com/lit/an/slva034a/slva034a.pdf
Moderator edit: combined multiple posts