the text on lcd screen is very dull.the back light is ok.what sould i check?any idea?
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Hi.
I have some problem with old CRT TV Samsung model: CW-29Z338T, 29" size TV.
The problem is that letters and other text are not clear, text or letters are shadowed on the right side.
I found 2 capacitors on CRT Picture Tube Board.
47uF/400V was leaking very bad, the second cap 10uF/250V was bad ESR reading so i replace this cap also.
Replacement these 2 capacitors did not help nothing.
I try to reduce brightness, contrast and sharpness. There is very small effect on this shadow.
To reduce G2 down have more effect... -
Hi all im undertaking a repair of and old Hitachi tv model number C1421T-TEXT which has customer sentimental value .. the LOPTX has failed the type number on the label is DE50H0000152 which i believe is also HR7880 direct replacement . I have searched on google to no joy if anyone has any information to a remote possibility preferably within the uk to obtaining either the original or HR equivalent i would very much appreciate any help Many thanks guys Leo...01-31-2024, 02:49 PM -
Hello everyone.
Got a catalyst 2960 from the usual scrapyard - ebay.
It is stuck in bootloop and the power supply is missing the 3.3v rail. (+12V, -53V, +3.3V)
Some green moisture crystallization on mainboard, which cleared very well with IPA and visually there is nothing rusted or gone.
Still working on the PSU to get the 3.3v rail back (waiting for parts), but for now I'm using an external buck converter board hooked up to the 12V rail ( by the way, the switch seems to be working with only 12V ).
The switch fails to boot due to the following POST error:... -
I hope this is the right forum to post in despite not technically being a repair, but still a question of swapping boards.
I thought I'd explore the possibility to upgrade an existing working Samsung ue55nu7096u with the logic board (and power board if needed) of a newer model (ue55ru7105k) of the same size and appearance (and resolution). The reason being I'd like the extra inputs of that board including component in, an extra HDMI port and bluetooth. Its panel is broken so I have no use for the board otherwise.
The models launched in 2018 and 2019 respectively.... -
I have 2 access points, one a U6-LR and WZR-300HP running DD-WRT v3.0-r28444 (has had stable wifi since 2015)
and i am trying to work on my PICO W and it suddenly would not connect and my computer had a very hard time connecting and my dad had been complained about his phone connecting
so i ran a wifi scan script on the pico and it just hang for several seconds and found nothing, normally it would spit out every AP in under a second (both of mine and some neighbors)
What i did was just install a U6-Lite that i had not gotten around to installing to replace...
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