Finally i got replacement backup capacitor.
After soldering new cap and testing problem was solved, clock can be unplugged and after powering back time is still counting.
ElectronicNoobBlog
My "fight" with electronics devices :-)
Monthly Archives: November 2017
Fixing PHILIPS HF3451 Wake-up Light clock backup battery (capacitor)
From some time, my great Philips Wake-up Light start suffering from resetting clock time after short power loss. I remember that some time ago, when unplugged in power loss occurred after power back clock time was continued. It clear indicate problem with backup battery. I decide to open and investigate.
Inside i found not a single use backup battery but capacitor. Over time it’s lost capacity.
I do not have spare so decided to order new one from bay.
Continuation
re-celling Clansman 24V (PRC 320 and similar) battery and installing new eneloop cells
Video of re-celling process
Pictures.
This is newer plastic one (i do not recommend for re-celling)
HYT BL1719 (HYT TC 446S tear down battery to see inside
I tear down HYT BL1719 to check if possible re-cell.
Diference between REAL and REPLICA U-229 connector on TRI PRC 152 radio
Here You can see deference between REAL and REPLICA connector U-229 (it’s not exactly U-229, because U-229 is female) on TRI PRC 152 radio.
