Hi,
Initially, have you tried a full hard reset? If not, pls unplug from the mains. Most current devices would reset and revert back to factory default settings (assuming no internal hardware fault) when unplugged for a considerable period of time (a couple of hours).
Pls post back for any development(s) or even the lack of it.
Hope this be of initial help/idea. Good luck and kind regards.
Thank you for using FixYa.
Hi again,
The unit powering on then automatically shutting off is an indication that the built-in auto protect is activating. Normally, the built-in auto protect triggers a relay to power up or down the system and that is what is being heard (clicking sound internally). This could be brought about by any of the following:
1. Systems fault (firmware glitch) which could be cleared through a reset;
2. hardware fault - pertains to components that failed. In small sets like this, it could be a number of parts but primarily may be the power supply or the vertical;
3. in some instances, a misaligned/defective/un-ejected tape could also false trigger the auto protect;
4. any foreign material/object in the tape slot could also possible false trigger the auto protect.
Appreciate your additional information. Based on this, it is likely that you simply have a loose connection or perhaps even a cold solder. A quick fix / shotgun approach would be to re-solder all the major joints with focus on the high power devices such as the filter capacitor, regulator, relay, vertical IC, Hout, FBT and/or ensure that all connectors are plug in snugly.
Additionally, relays have been known to engage (click) but no internal contact. Normal repair would be to replace but as a tech, you should be able to remove the plastic cap and with the use of a sandpaper scratch away burns on the contact points.
Evidently, if problem persist, you may need to access a service manual (available on line here and most other sites that sell them) or at least a schematic diagram (VP-6 chassis) and do voltage checks.
Glad to be of some assistance and appreciate the rating too.
on the relay, either that or you may have to break the top cover/cap off.
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TV is Sharp VT 3448X
Yes, tried all that, I am an electronics tech of many years experience, but getting on in years, and not quite as good as I would like to be!!
I've checked the tape out. I can load & eject the tape. but it will not play, as the power on problem is still not resolved. I did cure this problem at one point....don't know how!! All working satisfactorily until I reassembled everything, then after it had been running for several hours, I picked up the TV & moved it...fault back in full force, and not able to fix it this time
Still working on this problem. Have now got the top circuit board off. Someone has apparently been at it before this as there are signs of a number of re-done joints. Trying all these first, the relay cover wom't come off I may unsolder that if all else fails.
Thanks
When TV is put into standby mode it also turns off the foxtell box and can't record programes
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