hi all, not a service tech just love electronics, being a guitar player for over 30 years most of my repairs have been on audio equipment, so maybe some of you tv guru"s can help me out on my tv! i have sylvania model srcd227. its a combo vhs/dvd unit. one day it just quit, quietly i might add ! now it tries to power up but shuts down after a second or two. no scat for it, when i power it up red led on front lights then shuts off, high voltage comes up to about 16kv then drops as it shuts down, i hear two clicks which i belive is the degauss circuit turning on and off. the ihvt and horizontal/vertical circuits are loacated on a seperate board mounted off of the main board,attached by ribbon cables to main board. disconnecting ribbon cable from power supply will let the tv come on with out shutting down led on front stays on ,speakers come on, till i shut it off. after checking resistances on transistors\diodes\resistors i cant find anything that is defently shorted or open? tried using variac to bring voltage up slowly but still just shuts down. after checking some voltages that are marked on the main board most check out ok, except the 112v that is used/i believe for the b+ to the h.o.t.board is at 120v? is this to high causing shut down? with the ribboncable removed it measures 117v? still quite a bit off from the 112v marked on the board? i know that these boards probably are used in 100 other tv\s and by looking up part numbers there must be 4 different manufactures in this set alone, lmao but maybe this is the norm? can anyone try to help me out, or am i in over my head? thanks in advance, its been a good tv combo would like to keep it, although ive been reading some reviews lately and none of them were good to say the least!!!!
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I have problem with my laptop, with code board X415EA 2.0,
laptop cannot shutdown with baterai only, if i plug the adaptor, laptop can shutdown, but when the adaptor was unplug, laptop wake up
I did :
1. Flash Bios
2. RTC_RST 3.3V
3. LID_SW 3.3V
4. WLAN_WAKE# 3.3V08-26-2025, 04:42 AM -
The model is 15ec-1061nm
Board number is DAG3EDMB8D0
SO i turn the laptop on , and as soon as it starts booting from disk, from usb, windows,linux,HBCD,anything i boot it just turns off....while in bios menu or in linux boot menu it stays on normally...It's like when it starts to use graphics it shuts down...But i measured 0.72V while working on the GPU power line,no excess heat is comming from GPU or CPU, i even removed the heatsink and turned the laptop on and everything worked fine, got a bit hot, fan span to full speed, but it worked like that for few minutes in bios...10-29-2024, 12:05 AM -
I have a really weird problem, this motherboard was working normally, someday it just started and all fans were running but didn't want to post, tried resetting bios, checking CPU and it was getting warm tried external gpu, flashed bios with programmer, but same problem.
Next day after several attempts the board goes into protection mode, no more staying on, I turn on the PSU fans starts directly turning, it used to not start until I press the pwr button, now it starts directly and fans spins, and shuts off after 3 seconds sometimes less, then won't start again unless I unplug the PSU and... -
Hello everybody!
Have in work A1706 820-00239 model. Originally no power, shorted PPBUS_G3H because of corroded C6403, C6404. Some water damage around this components, but nothing major.
After replacing this capacitors the laptop came back to work, I reinstalled MacOS and had no issues until I started to test Type-C ports. Sometimes the laptop shuts off immediately when some action with Type-C ports performed (charger disconnected or USB device inserted/disconnected). I checked Type-C port flexes, they are okay, but I cleaned them anyway. I can't see any signs of liquid...11-20-2024, 08:14 AM -
hp fpw50-la-h323p rev 1.0
automatic shutdown after 30 sec of display coming
do not shutdown without ramstick
someone give me idea plz08-20-2024, 03:50 AM