Toshiba 40RV525R repair (schematics?)

[juicer]

Re: Toshiba 40RV525R repair (schematics?)

thanks but not in my case. both fuses fine. I put this project on hold but the wife is after me to chuck it...

[juicer]

Re: Toshiba 40RV525R repair (schematics?)

found one toasty spot on the power supply board
it is a sr506 diode 60v 5amp
can i substitute sr560? (I am not dyslexic) just that the price difference is notable 10x506=$1 while 1 piece of sr560 is $7

[budm]

Re: Toshiba 40RV525R repair (schematics?)

SR 560 is the replacement for the SR506.


Where did you see SR560 for $7?

http://www.mouser.com/Search/Refine.aspx?Keyword=SR560

[juicer]

Re: Toshiba 40RV525R repair (schematics?)

Ebay $6.95 for 1
5 for $10
Thanks for the substitute as can get from china (slow boat) for 10 for $1 shipped.

[juicer]

Re: Toshiba 40RV525R repair (schematics?)

I only have a harbor freight multi-meter. It does have a setting for diodes (as well as ohms). I desoldered the SR506 diode from the board. as the board was discolored in this area and it seemed like a possible source of my issue. It appears that the schottky diode SR506 tests fine for one direction of current but is there any way of determining if it is 'leaking" or any other defect?
When I first attach the leads, the reading varies from the 700s or 400s or 200s but in each instance almost instantly goes down to ~135. Is this normal value and response?

[NeedsMoreFlux]

Re: Toshiba 40RV525R repair (schematics?)

sounds like it has a capacitor in series. caps go up and down when measuring resistance.

[NeedsMoreFlux]

Re: Toshiba 40RV525R repair (schematics?)

Is it possible to test diodes or capacitors without removing from circuit?

I believe resistors usually fail open circuit and caps usually fail closed circuit/0ohm short. though some times ceramic caps crack because they don't flex and can fail open.

[NeedsMoreFlux]

Re: Toshiba 40RV525R repair (schematics?)

I have the same t.v. I'm trying to fix the inverter-no backlight.