All posts by jb38
Below are all of jb38's postings, with the most recent are at the bottom of the page.
Gary: With any queries of this nature its absolutely essential for a location to be given, this in the form of a post code or one from nearby, e.g: a shop / post office, this info required to enable the status of the transmitter covering your area to be checked out.
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Kieran Taylor: Have you tried swapping the two input connectors over? because if that action results in reception returning then the input feed from the dish that's presently connected into the boxes LNB2 position is defective.
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John McKenzie: Nothing is indicated on the engineering notice board as far as any work having been taking place at the relay, and as yet no other complaints have been made.
If you are located close to the mast then you should try a test with one of these old set top aerials connecting into your TV, or alternatively try a short length (about 4 feet or so) of bell type wire or similar pushed into the middle of your TV's aerial, the reason for this type of test being to see if reception improves with a slightly weaker signal.
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Ian: I am beginning to suspect that the Philips box might actually have developed a fault as you quite simply should not be experiencing all of these problems.
However forgetting the box for the time being and concentrating solely on the TV, fully appreciating that your TV by being an HD Ready type cannot resolve a picture on mux Ch30 the HD transmitter, but though can you receive all of the other "programme channels" (NOT mux channels) mentioned? i.e: BBC1, ITV1, ITV3 (10), Pick TV (11), Film 4 (15), numbers in brackets being EPG programme guide numbers, not mux channels.
Of course remembering that you only require to check if that mentioned can be "viewed" or not (not signal checked) by selecting them from the programme guide, but though as these programme channels do represent five (HD excluded) of the six multiplex transmitters used by Crystal Palace this then indicates that you will receive the full compliment of programmes transmitted by Crystal Palace.
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Ross Taylor: The problem that 4G can in certain circumstances cause is only one of its transmitter creating a powerful RF signal that's capable of swamping the wideband input of a TV or boxes tuner thereby desensitizing it to receiving TV signals.
Although having expressed my view in the past insomuch that I think the whole issue is being somewhat hyped up, as any powerful RF source that transmits on a frequency near to (not actually on) that used for TV reception is equally capable of desensitizing the RF input circuitry in a tuner, as it causes the tuners AGC (automatic gain circuit) to cut back the sensitivity of the tuner, this in turn also kills the TV signal.
The point to remember being, that any wideband tuner such as used in TV's is always susceptible to sensing RF signals near to its operating range, the tuner doesn't actually require to tuned to the offending signal, and as far as Ch30 is concerned, in my opinion any TV receiving programmes on mux Ch30 is only ever likely to be affected if the 4G transmitter was located at less than 30 metres or so away and was working at maximum power, AND that being coupled to the tuner fitted in the TV or box being one of the more mediocre types usually found in lower end devices.
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Kieran Taylor: Unfortunately when I had suggested swapping the cables over I did not take into account you having tried that mentioned at the top of this page, because if the LNB1 feed was defective then by the box having been unpowered that would have wiped out the main (LNB1) tuners memory thereby requiring the box to be unpowered again "after" having swapped the two feeds over to activate the "searching for listings" procedure, and so "if" you have just left the feeds swapped over then disconnect the box from the mains again for about 30 secs before powering up again and checking the result.
But though, when you tried your sat finder test was it at the LNB or the box end of the cable? and did you try it on both cables? because if that said did apply to both cables and the test was carried out at the box end then you should try a proper signal test on the box using the undermentioned procedure.
Press "Services" on your Sky remote control and you will see the main menu with "Options" being highlighted.
2:- Select the "Settings" menu using the right arrow button and press select.
3:- Use the left / right arrows to scroll to "Signal" and press select, the grey bars displayed will show you the strength of anything that might be received, and if anything is indicated then the strength / quality levels being indicated for both tuners have to be around 55% minimum or more to produce a picture, because if its significantly less than that level its liable to result in the no signal message being seen caused by the dish being slightly out of alignment.
If though none of the aforementioned rectifies the situation then leave the box unpowered for about 30 minutes to allow it to cool down before powering up again, as some of these boxes suffered from power supply problems that only showed up once the box had heated up, although to be perfectly honest its always best if a box can be tested out on another dish, like for example a friendly neighbours! as this saves a multitude of tests having to be carried out.
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Omhie / Re:- ian from notts: Well yes, provided that anything purchased was not bought under the "no returns" or "sold as seen" label, because power supply problems in Sky boxes nearly always involve a temperature dependant time factor before the fault shows up, this in practice meaning a few hours or less in some installations whereas days in others depending on where a person might have installed the box, obviously the problem appearing much sooner if the box is installed within the confines of a Hi-Fi cabinet or similar.
By the way, there isn't really any advantage in anyone purchasing a twin LNB input Sky+ box unless they are intending to take out a Sky contract at some point in time, as a Sky+ box only works like a standard box without a contract being in force.
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Ian: I think that the issue was somewhat clouded from the start by your suspicion about the powered aerial that you had purchased and use of.
The aspect of your problem that could suggest a fault being, that if you are viewing something you have previously recorded and you press stop, this should revert you back to the live TV channel that the "boxes" tuner was sitting on, you having indicated not.
However on having a search around you might find the info / comments relating to software problems with that model of box an interesting read albeit somewhat lengthy.
Philips/Pace HDT 8520 HD-PVR Master thread inc. Bug and Issues List [Part One] | AVForums.com - UK Online
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Jo Dee: Apart from the advice given by Dave Lindsay, as far as your question about whether their gadgets could interference or not, then yes that's very possible! because Freeview is vulnerable to interference from a variety of sources including modern electronic devices, and although the interference caused by them is not by any means far ranging and rapidly dies off by the metre, being next door virtually means that you are permanently within range.
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Friday 17 May 2013 8:23PM
Sukh: Should also have added, that if rather than the usual wall plate you see two coax cables then check the connectors on the end of them, because if they are intended for satellite purposes then the front of the connectors will have the appearance of a hexagonal nut, this being able to turn freely from the body of the connector.