sanyo dp26640 dead

[beeman]

sorry if i am reposting this but cant find the old one try pic again geting power to the board, but power on ground cant find fuse ty wont power on no power light or nothing thangs for any help

[James Mandapati]

Re: sanyo dp26640 dead

Here is your old one
https://www.badcaps.net/forum/showthread.php?t=34069

[selldoor]

Re: sanyo dp26640 dead

i have a sanyo dp 26640 that wont power on there is power comming in i am learning as i go have fix 4 other tv but you could see the trouble , with my dmm i have the black lead to chasy ground red lead to power board or control board ground and stil get 10v???

This is what you originally said - if you had mentioned heatsink then the answer is simple. heatsinks often carry a voltage we warn people time and time a gain to be careful not to touch heatsinks when the set is powered
or recently switched off as they can carry a voltage that will give you a nasty jolt.

After all that the pictures are not really clear enough for troubleshooting- the idea is that we can see parts clearly and the part numbers so we can
direct you on what to check..

One of the connectors bottom right and top right will lead to the other
(Main) board - Use a ground screw for black meter lead and with the red
lead test each pin on the connector. You need it all set up and on to do this
DO NOT Touch the heatsinks or any other part of the board.

If you cannot get a probe into the pins with the connector in place insert a sewing needle next to a wire and test to the needle.
EDIT
Looks like the bottom right connector - does it say on either board
what the voltages should be?

[beeman]

Re: sanyo dp26640 dead

no power on any pin going to control board other side that shoud be 24v is no power on any pin tryed more pic all most have to take pic of parts to get close enough i will try to do better on that

[budm]

Re: sanyo dp26640 dead

So you do not even have 5V on the power supply connector? List the voltage readings on the power supply connector.
I cannot tell form the pictures, but does it look like this picture?
http://s807.photobucket.com/user/bud...?sort=3&page=1

[beeman]

Re: sanyo dp26640 dead

no power on any pin

[tom66]

Re: sanyo dp26640 dead

Got service manual?
http://www.tgohome.com/ServiceManual...&Search=Submit

There look to be at least 12 possible variants, make sure you get the right one.

[budm]

Re: sanyo dp26640 dead

"but power on ground cant find fuse" The main AC fuse (close to where the AC power cord is) is soldered into the board, it is the small black rectangular body with T4AL250V printing on the board next to it.

[beeman]

Re: sanyo dp26640 dead

no power on any pin

[budm]

Re: sanyo dp26640 dead

You indicated that you cannot find the fuse, see did you check the fuse in my POST 8?
Or may be I am reading your reply in post 9 wrong: "no power on any pin" which pin of what?

[beeman]

Re: sanyo dp26640 dead

learned something new, thought the black box was the fuse but was not shure, what do you mean 12 variants i do have power across the board from power cord all the way to the to transformers then nothing or is this wrog way of checking thanks for help

[selldoor]

Re: sanyo dp26640 dead

Not the usual way of checking a fuse but if you have 120vac after the fuse and 170vdc or so at the transformer then the fuse is ok.
There are up to 12 variations of this tv so you need to get the manual that matches your boards.

Getting back to the low voltages what are you using for the ground?
Try again putting black lead on SBND pin and red lead on 5v pin set meter on 20 vDC

You need to have the set all connected and switched on

[beeman]

Re: sanyo dp26640 dead

still working on good pic pin is on 5v standby

[selldoor]

Re: sanyo dp26640 dead

No- I meant use the SGND pin for the black lead - but mistyped -sorry.
Just test to a pin marked GND

Doh I dont think your connector is the same - when you didnt answer budm I assumed it was.
Can you do a pic of it so we can see the pin descriptions

[beeman]

Re: sanyo dp26640 dead

put black on ground and red on 5v stby even tryed 12v still nothing

[beeman]

Re: sanyo dp26640 dead

ment to put with last post , sorry late posting wife kicked me off her table

[beeman]

Re: sanyo dp26640 dead

any ideal were i could get free manule