Intermittent Samsung H4000 TV A/V problem. Failing component, or "reset" fixable?

[ja1870]

As probably no symptom is unknown to those around here, would appreciate any comments.

Trying to troubleshoot an intermittent condition for a non-technical senior - remotely.

When I can get over there, will try a factory reset, but suppose it could be a symptom of a failing cap or other component - and prefer to be forewarned either way, if possible.
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Detail:
Older 28" (non-Smart) flat screen Samsung UN28H4000AFXZA works perfectly, except when occasionally displays one of two - probably related - symptoms.

1) Channel displays picture, but no built-in sound output. Changing volume setting, or toggling mute button does nothing. Audio-out ports status is unknown.

2) Channel "blank" and displays "no signal" message. But signal quality/strength display is fine.

Taught user to power off and back on - after which all is well.

Presume the OTA roof antenna is still up with strong signal, and coax tightly connected, and that household power is stable.

Can't get a definitive answer from the user, but think it usually happens after TV has been on - rather than showing up immediately after power-up.

Thanks.

[R_J]

Re: Intermittent Samsung H4000 TV A/V problem. Failing component, or "reset" fixable?

There does seem to be a firmware update ( ver 1042.0 ) for that model from Samsung, give that a try first https://www.samsung.com/ie/support/m...E32H4000AWXXU/

[Rajnhl]

Re: Intermittent Samsung H4000 TV A/V problem. Failing component, or "reset" fixable?

some samsung led models auto detect input signal as normal composite video signal and component signal. there is switch in socket which loosens after some time due to dust , try to clean it by spraying wd40 in AV input sockets.

[ja1870]

Re: Intermittent Samsung H4000 TV A/V problem. Failing component, or "reset" fixable?

Thanks for the hints. Found the update to firmware for the exact model and will try that when I can get there. Will be sure to bring a spray to clean as well.