After a downloaded Win10 upgrade courtesy of Microsoft, my Lenovo Thinkpad has developed a keyboard issue. Four of the keys fail to respond to any form of activation. Slightly annoying as one is needed for the password log in. They are four keys, all adjacent to each other, not spread randomly.
Using an external keyboard, the laptop performs perfectly but I cant seem to find a solution to override & correct this issue. It was working perfectly prior to this upgrade.
I have been told to reload the keyboard drivers & see if that solves the issue.
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Sussexhandyman
New Member
Last Activity: 08-20-2022, 03:30 AM
Joined: 03-16-2022
Location: Land of the South Saxons
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Re: UE32C5100QW Dropping signal.
That looks distinctly possible as the problem exists with both the HDMI port & using a scart converter in that port. It seems not to have a positive contact, ie too loose.
The back is coming off later so I hope it will be an easy fix.... -
UE32C5100QW Dropping signal.
Hi, this Samsung 32" TV keeps dropping out from the signal. Message that appears on screen is to check connector, co-ax cable, etc. I know the aerial & digi receiving equipment works fine as two other TVs we have work perfectly on the same gear.
I did notice that the signal input connection is not very tight & using an alternative HDMI input doesn't respond.
Just wondered if there were known problem areas before I take the back off & go poking about. -
Re: Alternative supplier of SHM ceramic caps.
Have managed to source a replacement for the ceramic safety cap, so my request is redundant.
Thanks for all the help.Leave a comment:
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Alternative supplier of SHM ceramic caps.
The PSU on my Samsung tv, pt no: BN44-00214A decided to give up the ghost.
As I'm always trying to repair rather than scrap parts, I'm looking to overhaul the PSU board & have identified most of the capacitors & a MOSFET that need to be replaced.
I'm stuck for one ceramic safety capacitor, at circuit location CM810. Its a cap made by SHM & the details printed on it are: SHM, X1400, Y1250, B471K.
Looking at data sheets on SHM website doesn't reveal a traceable component, because its all in Chinese.
The info on the Samsung schematics for the PSU give the values... -
Re: Samsung BN44-00214A PSU
Should have done a search on the forum as its turned up the schematics for the PSU board & lo and behold, there was the info I needed to replace the small blue cap at CM810. Its listed as 1KV, 2.2nF.
Can now order my list of replacement parts, desolder all the suspect components & clean off all the c**p used to support them. Will let you know how it goes & if it works again.Leave a comment:
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Re: Samsung BN44-00214A PSU
Thanks for responding.
I wanted to replace that capacitor as it was coated with the support adhesive & it was very close to the two link wires that burnt out. For what it costs, I think it would be prudent to replace it & I need to remove it to clean out the adhesive that was used on it, much of which has also stuck on the board. Space is very limited to do this cleaning.
Any idea what the rating is likely to be?Leave a comment:
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Samsung BN44-00214A PSU
Hi, The psu on our Samsung LE26 television decided to blow a link & the fuse.
After scanning t'Internet, I found quite a few comments, including on here, about know faults & repairs on the board.
I've replaced the two links & resoldered many dry joints and have now decided to remove all the mounting support paste that has been applied to a few components, along with replacing some of the ceramic safety capacitors & a blown mosfet.
I've managed to locate suppliers for all these components bar one.
Its a ceramic safety capacitor, made... -
Re: Samsung LE32A330J1 Blown internal fuse
Just found this site after looking for a blown mosfet that failed on my Samsung BN44-00214A PSU.
Good to learn that the 'supporting' glue becomes conductive over time. Will be removing it on the board & have already been over it to rectify all the bad solder joints & two blown links near that mega 450V capacitor.
Look forward to being a regular contributor.Leave a comment:
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