Re: What causes voltage regulators to fail?
7805 + 2 diodes should work at roughly 7.5V
7805 + 2 diodes should work at roughly 7.5V
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hello ,for diy voltage injector for short killer/finder -- is it possible to use something like this - LM317 DC Linear Regulator, DC-DC 4.5~40V Turn 1.2~37V, Step Down Power Module, Adjustable
and ampere controller along (to make it zero amps ) with some addons(transistors diodes etc.) for it -- and use some 5v adaptor or 3.3v volt rail of my smps power supply as input and finally get 1v and zero amps for injecting voltage to find out short circuit component ? ..
for source input -- can we use 3.3 -4 volt 18550 battery ?( i have some of those ) and then adding ampere regulator... -
This Concept 2 rower pm5 monitor doesn't shut down. It keeps turning on and stays on after being turned off. I read on another forum by another user that replaced the same component to check the voltage regulator.
The monitor should pull around 35mA when turned on and in shutdown it should drops to around 0.060mA. Any advice on finding the voltage regulator on this board to check if it needs to be replaced?
11-05-2024, 07:38 AM -
Hi all!
HISENSE 65E7KQ PRO
RSAG7.820.13512 - chassis
MT9618BAATAB - cpu
RSAG7.820.12059 - power
HD650Y3U77 - panel
KLM8G1GETF - emmc
The TV does not turn on, the standby indicator is on. All voltages are present.
Emms is dead. Not readable, not detected.
Replaced emmc.
But with another dump there is no launch
Terminal log
UART
<
AC_ON
RPMB key is not yet programmed
HASH1_VERSION=0x00000000 64bit
E-B
FDE enabled
layout pattern onebin by SAR7,0... -
The ram regulator produces VTT voltage of 0.65V and the display comes. When we restart the laptop the VTT voltage becomes 0.75 and no display.[Used same ddr3l ram].
Also, it becomes 1.35 V on the ram coil and all are okay but after restarting Voltage becomes 1.5V with no display. -
Hello
Im trying to repair the Volvo HU850 radio/CD-player from a Volvo V70.
I have ordered replacements for the four transistors (SD1760), but Im not sure about a replacement for the low dropout voltage regulator IC (marked by the red circle in the attached picture).
On the body of the IC it says: “LF33AH GK133544”.
Does anyone know where to find this part or a replacement for it?
Cheers
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