Jolly Posted May 5, 2013 Report Share Posted May 5, 2013 I use an N550 and when i switch it on with an external power source it wont come on sometimes i have to try it 20 or 30 times once on it is no problem at all any ideas ? Quote Link to comment Share on other sites More sharing options...
Jolly Posted May 8, 2013 Author Report Share Posted May 8, 2013 Anyone ? Quote Link to comment Share on other sites More sharing options...
Breastman Posted May 8, 2013 Report Share Posted May 8, 2013 Is taking it back to where you bought it too obvious? Quote Link to comment Share on other sites More sharing options...
stubby Posted May 8, 2013 Report Share Posted May 8, 2013 Anyone ? its ******** Quote Link to comment Share on other sites More sharing options...
peek-at Posted May 8, 2013 Report Share Posted May 8, 2013 (edited) External power source ?? Do you mean the supplied lead acid battery or something else...if so what? Edited May 9, 2013 by peek-at Quote Link to comment Share on other sites More sharing options...
wymberley Posted May 8, 2013 Report Share Posted May 8, 2013 Internal batteries in or out? Try with them out if not already done. I'd be inclined to go with a defective cable. They're easy enough to knock up, compliments of Maplins if necessary. Try an AVO on the one you have, giving it a bit of a flex to see if you can break the continuity. Quote Link to comment Share on other sites More sharing options...
highseas Posted May 8, 2013 Report Share Posted May 8, 2013 its ******** Quote Link to comment Share on other sites More sharing options...
foosa Posted May 9, 2013 Report Share Posted May 9, 2013 I have the same problem with mine, only seems to do it when batteries are low or just changed to a fresh set, will switch it on and sometimes get nothing, sometimes comes on but no reticle or other on screen info usually there. However, when it does eventually work ok it seems fine till next battery change. leaving it off for 5 min before switching on after change of power source seems to work, not sure but think it may have something to do with interupted power supply then takes a while to recharge/reset itself. Going to try a new set of better quality batteries soon, mine are pretty old now and dont last long which cant be good for the unit. Quote Link to comment Share on other sites More sharing options...
wymberley Posted May 19, 2013 Report Share Posted May 19, 2013 Damn me, used mine with the remote for the first time last night - expected to be out for a good while - and got the same - no internal batteries fitted and none with me. Once it came on, I left it on and only started to fiddle once it was obvious that what I was after had gone to a different restaurant. Still not certain, but thought moving the plug about in the unit's socket did have an effect. Quote Link to comment Share on other sites More sharing options...
wymberley Posted May 19, 2013 Report Share Posted May 19, 2013 Have had a bit more of a fiddle this morning. If you have the problem, please don't take the following for gospel as I'm still not 100% certain, but for me, it's good enough. Moving the power lead plug about at the unit's socket does cause power loss. To regain it, it is necessary to switch off, unplug and start again. I then noticed that the central (+) socket pin is split. With a thin craft knife/scalpel, I sprung this open a tad which prevented complete power loss but caused some 'interference' when the plug was 'manipulated'. I have 2 lithium batteries which both came with mains and car (cigar lighter) chargers. Quickly trying one of these, problem appeared to disappear - or when trying to avoid comeback when signing the F700, there was, 'no fault apparent'. I then noticed that the central positive socket on the plug on these is what I can only describe as a 'spring loaded'. A quality bit of kit ensuring a good contact. Having two, and don't really need them anyway, I'm going to cut the cable at the cigar plug end and attach this to the cigar lighter plug from the existing cable. Sorted. Perhaps some electronics whizz member will recognise the description and know from where these type of plug can be obtained. Quote Link to comment Share on other sites More sharing options...
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