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this lcd first started showing green lines horizontal ,with flickrs then one day stopped showing rest of the screen , now it just like in the pic , i can see mouse at top,also the icons at right end of screen , i also tried to look around the cable wires ,adn loosened it ,but its the same result . i tried the flex test , the monitor changes to white ,and different colours, but dint show the actual picture , external monitor vga connection is good, so please guide me what next to do . please verify the pics, thank you .... -
I have two TCL A30 phones.
Old Phone: This phone worked fine for years, then stopped charging If you plugged a charger into it, the phone would make the charging sound, the phone would tell you it is charging, but the battery icon would not have the charging symbol in it and the battery would not charge.I tried new battery, same behavior.
New Phone: Works fine, bought as a donor board to try and repair Old Phone
My interest here is to repair Old Phone, using components parts off New Phone if needed. I am not interested in replacing Old Phone with New Phone.... -
The off/on/auto switch was busted so i forced it into auto mode and now the blue light comes on but i don’t get any audio output. Does anyone one have any experience repairing this amplifier? I looked it over, checked some the of output transistors, some of the power resistors and cleaned that nasty conductive epoxy glue stuff off but not having much luck in the trouble shooting department.
I did however find a part of the PCB that was discolored from heat...03-22-2024, 06:00 PM -
Hi everybody just wondered why when i post pics they end up upside down?
i also tried rotating them so they were upside down when i posted them and they were still upside down confused?12-24-2021, 03:15 AM -
My garage alarm siren was sounding a bit quiet and the tone was weird, like mixed with another tone.
Powered up it draws about 14V 300mA with a spike to ~1A briefly during the low pitch yelp, seems normal.
Teardown reveals only two electrolytic capacitors inside, so I replaced them. 100uF 25V for the warble ramp, and 47uF 16V for decoupling.
The old ones tested OK sort of? - 100uF reads 68uF (-32%) ESR 0.80Ω, and 47uF reads 41uF ESR 0.87Ω as well so it was a bit confusing if the caps were to blame.
The tone caps are green film caps I left alone. Newer...
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