Re: APC Back-ups RS 1500 Dead



Thank You. Another APC backup ups RS1500 saved!
Replaced caps 40 and 41. Cap 40 was SMD 22uF 16V replaced with 22uF 25V and cap 41 was bodged thruhole 22uF 16V replaced with 22uF 25V. Ups works great.
Simptoms were as folows:
Always on battery
Used software power chute V3.1 to check device, device was reporting voltage 188V instead 232V so it were in protection mode.
After replacing capacitors device reported voltage corectly....

Re: Need BIOS for: HP OmniBook 3000CTX 5/233

Do You have some tips where to look for something like this?

HP OmniBook 3000CTX, fan spin, no posting.

Need BIOS files.

Atmel AT29C256 - labeled as: 32HK100A/51SLBIOS/B5C3 U24
SST 29EE020 - labeled as: G2H0101A/SYS BIOS/3AAC U25

U24 I did not managed to read, ordered 5V PLCC32 adapter .
U25 dump is in attachment and is half empty. Dump is verified.
(Xgecu 886II pro)

HP OmniBook 3000CTX 5/266, 5/233, 5/200
Standard Memory: 16MB Non-removable
Maximum Memory: 144MB
Memory Expansion: 2 Sockets
CPU: Intel Pentium MMX 200MHz, Intel Pentium MMX 233MHz,...

Re: New Members - please post your introductions here

Hi,
thank You for great community.
I'm power system engineer, and my hobby are electronic.
Electronic as retro gaming, CRTs, and old PC's.
English is not my native language, so be gentle.
Have experience with PS1,2,3,4, Xbox OG, 360, CRTs, and latest interest are P1 133 laptops. Working on restoring damaged bios.
As hobbyist have a lot (mostly unnecessary) equipment Siglent SDS1104X-E upgraded to SDS1204X-E Mixed Signal Oscilloscope, hot air gun, some aliexpress quicko soldering irons (not...