Cello tv not switching on, 12 volts at lead. (2 Viewers)

Jul 6, 2009
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This is the second Cello tv I have had with this problem. The TV is supplied by a stabilised 12 volt supply, it started a few days ago where you would turn the power on an it would take a few seconds for the standby light to come on, then a bit longer then not at all. Tried switching the actual switch on and off it then came on. Today nothing Have had the cover off to check the switch and circuit. There is continuity from the 12 volt socket to the switch and then to the board but no luck. Bit miffed as although this one was bought it 2020 it has not had much use and is mounted on a shock absorber mount. any suggestions Please?
 
Feb 22, 2016
3,641
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York
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41,744
MH
Bailey 620 Approach
Exp
Since 2015
Hello, I’ve had this problem with a Samsung tv. It turned out to be a faulty power supply and was fixed with an apparently 10p resistor!
This link may be of some use to you.
 
OP
OP
B
Jul 6, 2009
1,835
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Thank you for your prompt reply, there is definitely power at the end of the lead that plugs into the tv, there is a circuit from the socket in the back of the tv to the switch and then onto the board. The annoying thing is because of our vans layout we have two TV’s and watch the one in the lounge most of the time and only occasionally use the on in the bedroom probably less than a few hours when our grandson watches his programs.
 
Oct 30, 2016
1,474
2,914
Colchester
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45,854
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Le voyageur 8.5
Exp
On 3rd van so not a total newbie....
We have a cello, and may have the same problem, it only seems to work when we plug an hdmi lead on for some reason?
 

TheBig1

LIFE MEMBER
Nov 27, 2011
17,669
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Dorset
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A class
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many many years! since I was a kid
I know you state it is a stabilised supply, but are you getting the full voltage under load? In other words, with the tv plugged in and on. The tv represents a resistive load and will pull the voltage down slightly

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Apr 6, 2019
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Eye, Peterborough, UK
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RV
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FourWinds Windsport 6.8L V10
Try cutting off the TV 12V plug and fit a better new one. Sorted my last TV that was intermittent. Awful solder in plug.
 
OP
OP
B
Jul 6, 2009
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Looked it up on the good old internet, instructions as follows. Remove power lead leave for one hour, press and hold standby button on tv not remote, whilst keeping button in plug in the 12 volt lead wait till standby light comes on (which it did) release standby button, turn tv on with remote control all is working fine. Whether it last only time will tell, thank you all for your input.
 
OP
OP
B
Jul 6, 2009
1,835
2,280
Funster No
7,383
I know you state it is a stabilised supply, but are you getting the full voltage under load? In other words, with the tv plugged in and on. The tv represents a resistive load and will pull the voltage down slightly
The stabilised supply I have will put out up to 5 amps so has plenty of power and tried it with the other tv worked fine.
 

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