Bush LCD37TV016HD

[LEEDASH]

Re: Bush LCD37TV016HD

holding the probes together reads 00.2
ok kettle lead is in switch is on
black lead on negative on plug
red on 1 then on 2 reading 00.4

[LEEDASH]

Re: Bush LCD37TV016HD

we are testing in 200 ohms

[Radio Fox]

Re: Bush LCD37TV016HD

This really doesnt seem to be making much sense. It is almost the same test as in 106/107...

Unless the blue wire has come away from the switch tag hidden underneath the heat shrink!

In your photo in post 118 the blue wire which you have marked "neg to board" could have become disconnected.

LEEDASH...could you give that lead a tug to see if it moves. If it stretches the heatshrink then it looks like it may be disconnected from the switch.

It could also be the blue connection to the plug that connects to the PSU board.

[selldoor]

Re: Bush LCD37TV016HD

Radio Fox - he does seem to get a reading though on both sides of the switch on the negative -post 121 IF he means 0.4 0n both. Of course we cant see and as you suggest it may be a loose wire - intermittent problem.
Or intermittent bad switch connection.

Lee - did you try tugging your meter leads whilst holding the probes together.
We have had many cases of weird test results due to meter probe wires.

If all that seems ok then I suggest you go back and try this test again-

f you cannot find something to short out the pins on the mains plug, you could also try putting one probe on the Live pin of the mains plug, and the other probe on one of the pins on the connector that goes to the PSU. One of the pins (probably the one connected to the brown lead) should show zero Ohms when the rocker switch is in the ON position.

Then put one probe on the Neutral pin on the mains plug and the other on one of the pins on the connector that goes to the PSU board. Again, one of the pins (probably the one connected to the blue lead) should show zero Ohms.

Make sure the probe tips are cleaned

[Radio Fox]

Re: Bush LCD37TV016HD

Radio Fox - he does seem to get a reading though on both sides of the switch on the negative -post 121...

...but that reading was directly on the tags of the switch.

...If all that seems ok then I suggest you go back and try this test again-

f you cannot find something to short out the pins on the mains plug, you could also try putting one probe on the Live pin of the mains plug, and the other probe on one of the pins on the connector that goes to the PSU. One of the pins (probably the one connected to the brown lead) should show zero Ohms when the rocker switch is in the ON position.

Then put one probe on the Neutral pin on the mains plug and the other on one of the pins on the connector that goes to the PSU board. Again, one of the pins (probably the one connected to the blue lead) should show zero Ohms.

Make sure the probe tips are cleaned

LEEDASH has already done that. This was his reply to that same test that I suggested earlier:-

Ok radio fox ! Blue wire showing nothing brown wire reading 00.8

So it looks like the O/C is between the switch tag & the pin on the PSU connector.

[selldoor]

Re: Bush LCD37TV016HD

..


So it looks like the O/C is between the switch tag & the pin on the PSU connector.

I hope so - dont think i have ever seen 7 pages of posts just to establish
voltage to the patient.

[Radio Fox]

Re: Bush LCD37TV016HD

I hope so - dont think i have ever seen 7 pages of posts just to establish
voltage to the patient.

LOL. At least it should (hopefully) be an easy fix!

[LEEDASH]

Re: Bush LCD37TV016HD

So we have established that we are getting some kind of power in to the block connector that goes in to the psu,ok and we are getting power in to the on/off switch,so why is it not going in to the psu ? can i suggest the two pin may be at fault ?

[vinceroger69]

Re: Bush LCD37TV016HD

basically between the switch and the power board reading the last few posts

[LEEDASH]

Re: Bush LCD37TV016HD

yeah,mmm,its basically connected to the switch then straight through to the psu ? really bugging.

[Radio Fox]

Re: Bush LCD37TV016HD

So we have established that we are getting some kind of power in to the block connector that goes in to the psu...

No we haven't!

When you did a test between the mains plug & both switch tags (blue wires), it measured OK.

When you did an earlier test between the mains plug & the blue pin on the connector that plugs into the PSU, it measured open circuit.

So there is an open circuit between the switch tag & the pin on the connector that connects to the PSU (in the blue lead).

Have you tried gently pulling on the blue leads to the connector and the switch? It is something really simple now.

[LEEDASH]

Re: Bush LCD37TV016HD

ok testing with unit on ! neutral and on blue reading 00.4 and on live and on blue 0.00

[selldoor]

Re: Bush LCD37TV016HD

What on earth are you doing NEVER test resistance /OHMS with power on.
Surprised you didnt blow your meter. - perhaps you have.

PLEASE will you just do the wire tugging tests we are asking for - blue wire
and meter wires.

EDIT
Probably over reacted there - you mean with the switch on dont you - not the power.

[LEEDASH]

Re: Bush LCD37TV016HD

not with the power on with the power switch in the on position,

[LEEDASH]

Re: Bush LCD37TV016HD

the only way you get a reading is with meter on the neutral side of the plug and attached to the blue,no reading on live side.
Ive pulled wires on meter and near switch and block connector to psu.

[tom66]

Re: Bush LCD37TV016HD

Where's your black probe going?

[LEEDASH]

Re: Bush LCD37TV016HD

black probe on neutral side of the plug and the red on the blue wire under rocker switch,either way still reads 00.5

[selldoor]

Re: Bush LCD37TV016HD

the only way you get a reading is with meter on the neutral side of the plug and attached to the blue,no reading on live side.
Ive pulled wires on meter and near switch and block connector to psu.

You originally said that you had connectivity right through on the live side.
Are you just having a laugh?

Ive pulled wires on meter and near switch and block connector to psu.

And what happened - we are not mind readers - did the meter change

did the blue wire move at all inside the shrink

Can you roll back the shrink to expose the connection.

[LEEDASH]

Re: Bush LCD37TV016HD

no just the neutral side and its 00.4 dont go up and dont down,can sort of roll it back the wire is soldered to the switch and seems ok.

[selldoor]

Re: Bush LCD37TV016HD

OK Meter on ohms 200 black probe on the pin in the board connector which connects to the blue wire.
Red probe on the point marked 1 then on 2 in my picture of the switch (post 118)