Sanyo DP46840

[lilmonk3]

Re: Sanyo DP46840

I seem to have all the proper voltages except for K8L.. 2 black wires and 1 white wire.. White -0
Black- 0
Black - 3.3v

[kevinm34232]

Re: Sanyo DP46840

Did you get service manual though? It has test points for the 5 or so shutdown circuits which makes it fairly simple to determine where the issue is..

Did you say it was DP42840-01? You had some typos

[kevinm34232]

Re: Sanyo DP46840

See if you have these test points, this is from the -00 chassis..

[lilmonk3]

Re: Sanyo DP46840

Dp42540 Chass. P42840-01

Its Dp42840

[lilmonk3]

Re: Sanyo DP46840

Here is a pic of the area on the main.. But I an not sure where or even how to test those points

[kevinm34232]

Re: Sanyo DP46840

Can you take a good pic of the entire main board, what is the # on the white sticker on the tuner N7A*...? It's not easy to find some of those points but they are there!

[lilmonk3]

Re: Sanyo DP46840

Here are some close ups .. White sticker is N7AM

[kevinm34232]

Re: Sanyo DP46840

Here are 4 PF test points, you should see some other points as well on the board with white stars around them.

Be very careful not to let the red probe slip when testing. Black probe to chassis ground.

[lilmonk3]

Re: Sanyo DP46840

Thanks Kev..I might not have time to get to it until the weekend...

[tvcoach]

Re: Sanyo DP46840

There is a service bulletin on this to change IC1670 and add a 18V zener

[selldoor]

Re: Sanyo DP46840

Tvcoach - that is great is there a link to the bulletin?

[BoJaXz]

Re: Sanyo DP46840

Hi, I have the dp46840 with the dp46840-00 chassis. The tv I have doesn't click when you plug it in or turn it on. When you turn it on, the green light comes on for about 3 seconds, then turns off. After three tries, it locks down and you have to unplug it. nothing comes on the tv, just black during the 3 seconds. Any ideas? I have a multi meter and am ready for direction. I'm assuming since the transformer didn't click, that there's an issue there. Any takers for helping this noob? :-)

[johnboy1313]

Re: Sanyo DP46840

It's best to start a new thread. Here's the service manual if you don't have it already.

[BoJaXz]

Re: Sanyo DP46840

I got the service manual after I posted. I did the test points and the audio power was supposed to be 13v and it's only 2.8. So I'm guessing it's the lv5806 step down converter. I can't find the actual ic001 audio amplifier chip. Unless it's on the back side of the board. And the same with d1671 to bypass the pfail circuit.

[kibbles67]

Re: Sanyo DP46840

Hi new here but have the same tv and same problem would it be just as easy to replace the boards? The power supply board and the main board.

[kibbles67]

Re: Sanyo DP46840

The next question I have does anyone know the best place to get those for the best price?