Sanyo CE37FD47 LCD No Power

[dumpystig]

Re: Sanyo CE37FD47 LCD No Power

It also looks like your DMM is brand new, have you read the manual? It will explain its use and the correct sockets/values/ranges to use for the different tests you will be doing now you've got the bug

[Liam.25]

Re: Sanyo CE37FD47 LCD No Power

i purchased it around 6 months ago, i got the manual here, going to read through it.

i have been using the meter mainly for continuity and testing output pins for voltage, testing components is all new to me.

thanks

[dumpystig]

Re: Sanyo CE37FD47 LCD No Power

OK, what is your mains supply V? Start by checking you have supply V at the plug on the board where your mains lead is connected

[dumpystig]

Re: Sanyo CE37FD47 LCD No Power

i purchased it around 6 months ago, i got the manual here, going to read through it.

i have been using the meter mainly for continuity and testing output pins for voltage, testing components is all new to me.

thanks

No worry, you will soon pick it up. But like i said, research as much as you can, starting with your meter manual

[Liam.25]

Re: Sanyo CE37FD47 LCD No Power

is that red probe to live?
and black probe to ground? like a grounding screw?

[dumpystig]

Re: Sanyo CE37FD47 LCD No Power

Red to Brown wire, black to blue wire, or corresponding pins on plug connected to board. Are you in the UK?

[Liam.25]

Re: Sanyo CE37FD47 LCD No Power

yes you are right, here in the uk.

brown - live
blue -neutral

going to test now.

[Liam.25]

Re: Sanyo CE37FD47 LCD No Power

i placed red to brown and black to blue. probes were standing nicely on there own. i stepped back to watch the meter as i turned the mains on, the dmm went bang??

not good - but at least i was aware of the voltage, i was nowhere near.

why would it do that?

[Liam.25]

Re: Sanyo CE37FD47 LCD No Power

it blown fuse in mains plug and blew the meter up??

[dumpystig]

Re: Sanyo CE37FD47 LCD No Power

Went bacK? You mean the display went black?

[Liam.25]

Re: Sanyo CE37FD47 LCD No Power

sorry just edited the post, it bent bang.

[dumpystig]

Re: Sanyo CE37FD47 LCD No Power

WFF??? Ok what setting did you have your meter on? It should have been 600V ~, 1 o'clock position, with the black lead in centre common socket and red lead in right V/ohms/mA socket

[Liam.25]

Re: Sanyo CE37FD47 LCD No Power

yes thats correct, i only changed from 11 o clock (last test on the capacitor) to 1 o clock (this test)

strange.

[dumpystig]

Re: Sanyo CE37FD47 LCD No Power

Well that's stumped me??? Is the board in situ on the TV, with all plugs connected to each board, while you are testing?

[Liam.25]

Re: Sanyo CE37FD47 LCD No Power

psu is in position, with only the mains connected.

[dumpystig]

Re: Sanyo CE37FD47 LCD No Power

Your meter blowing up would suggest to me that it was either on the wrong range (resistance?) or the leads were connected incorrectly... or your meter was previously screwed prior to these tests (hence no voltages being detected on 3 boards...)

[Liam.25]

Re: Sanyo CE37FD47 LCD No Power

i though about a faulty meter, but im working on a few other tv's and voltages could be found on them boards, but i will buy a new one today and carry on where i left off.

B&Q here i come.

[dumpystig]

Re: Sanyo CE37FD47 LCD No Power

Yeah but i think you need to start by figuring out what went wrong to cause such a blow up in the first place - if your meter settings were all correct then I would say its almost certain the meter was previously screwed. But when you get your new meter give the manual a good read. I will see you here again when you return

[PlainBill]

Re: Sanyo CE37FD47 LCD No Power

I think the pictures in posts 18 and 29 should be used in a 'How not to measure voltages' post in the 'Test Equipment Usage, Techniques, and Reviews' section.

PlainBill

[dumpystig]

Re: Sanyo CE37FD47 LCD No Power

Ah, how are you today, good I trust?

Yes, as you can see we have had a bit of a struggle today... but Liam.25.beta will be returning I'm sure, after first reading the manual for his new DMM