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-   -   Openbox S-9,S-10 con turner sin alimentacion (http://foros.zackyfiles.com/showthread.php?t=649504)

bonou12 12/08/2012 13:40

Openbox S-9,S-10 con turner sin alimentacion
 
I’ve traced the problem of low LNB voltage that causes the S-9 to work for a while then drop off. There is a small part that looks like a disc capacitor near the tuner that actually is a PTC thermistor that goes bad.
http://i56.photobucket.com/albums/g1...IMG_0018-2.jpg

This part provides short circuit protection, but when bad it trips off at loading well under the max rating of 500ma. The two bad ones I have found so far are marked M60 065.
http://i56.photobucket.com/albums/g1...IMG_0021-1.jpg
On my own OpenBox that is still working, this part is larger and is marked JK60 065. Digi-Key engineer crossed this to a “Little Fuse” brand part # F1993CT-ND. It costs 58 cents!
http://i56.photobucket.com/albums/g1...IMG_0016-1.jpg

This part can be changed from the top side of the board. Just snip the old one off.
http://i56.photobucket.com/albums/g1...IMG_0022-1.jpg

Then tack solder the new one to the solder pads.
http://i56.photobucket.com/albums/g1...IMG_0028-1.jpg


I then tested the S-9 by operating into a variable power resistor.
http://i56.photobucket.com/albums/g1...IMG_0026-1.jpg

Ran it at 19v. @ 460ma. For two hours. The voltage and current held and the thermistor ran cool.
http://i56.photobucket.com/albums/g1...IMG_0024-1.jpg

The S-10 uses the same part, M60 065, and is mounted on the tuner board. It has been confirmed that this Digi-Key part will fix the S-10 as well.

suerte y sal U2

s.moreno 06/12/2013 10:42

[QUOTE=bonou12;4379389]I’ve traced the problem of low LNB voltage that causes the S-9 to work for a while then drop off. There is a small part that looks like a disc capacitor near the tuner that actually is a PTC thermistor that goes bad.
http://i56.photobucket.com/albums/g1...IMG_0018-2.jpg

This part provides short circuit protection, but when bad it trips off at loading well under the max rating of 500ma. The two bad ones I have found so far are marked M60 065.
http://i56.photobucket.com/albums/g1...IMG_0021-1.jpg
On my own OpenBox that is still working, this part is larger and is marked JK60 065. Digi-Key engineer crossed this to a “Little Fuse” brand part # F1993CT-ND. It costs 58 cents!
http://i56.photobucket.com/albums/g1...IMG_0016-1.jpg

This part can be changed from the top side of the board. Just snip the old one off.
http://i56.photobucket.com/albums/g1...IMG_0022-1.jpg

Then tack solder the new one to the solder pads.
http://i56.photobucket.com/albums/g1...IMG_0028-1.jpg


I then tested the S-9 by operating into a variable power resistor.
http://i56.photobucket.com/albums/g1...IMG_0026-1.jpg

Ran it at 19v. @ 460ma. For two hours. The voltage and current held and the thermistor ran cool.
http://i56.photobucket.com/albums/g1...IMG_0024-1.jpg

The S-10 uses the same part, M60 065, and is mounted on the tuner board. It has been confirmed that this Digi-Key part will fix the S-10 as well.

suerte y sal U2[/QUOTE]

[Quote = bonou12; 4379389] he rastreado el problema de la baja tensión de LNB que hace que el S-9 para trabajar por un tiempo y luego dejar. Hay una pequeña parte que se ve como un condensador de disco cerca del sintonizador que en realidad es un termistor PTC que va mal.
[IMG] [url]http://i56.photobucket.com/albums/g171/bonou12/IMG_0018-2.jpg[/url] [/ IMG]

Esta parte proporciona protección contra cortocircuitos, pero cuando el mal se dispara fuera a cargar bien bajo la calificación máxima de 500 mA. Los dos más malas que he encontrado hasta el momento están marcados M60 065.
[IMG] [url]http://i56.photobucket.com/albums/g171/bonou12/IMG_0021-1.jpg[/url] [/ IMG]
Por mi cuenta OpenBox que todavía está trabajando, esta parte es más grande y está marcada JK60 065. Ingeniero de Digi-Key cruzó a un 'pequeño fusible' parte marca número F1993CT-ND. Su precio es de 58 centavos de dólar!
[IMG] [url]http://i56.photobucket.com/albums/g171/bonou12/IMG_0016-1.jpg[/url] [/ IMG]

Esta parte se puede cambiar desde el lado superior de la tarjeta. Simplemente cortar el viejo fuera.
[IMG] [url]http://i56.photobucket.com/albums/g171/bonou12/IMG_0022-1.jpg[/url] [/ IMG]

Luego suelde tack el nuevo a los puntos de soldadura.
[IMG] [url]http://i56.photobucket.com/albums/g171/bonou12/IMG_0028-1.jpg[/url] [/ IMG]


Luego he probado el S-9 operando en una resistencia de potencia variable.
[IMG] [url]http://i56.photobucket.com/albums/g171/bonou12/IMG_0026-1.jpg[/url] [/ IMG]

Ejecutó a 19v.
460 mA. Durante dos horas. El voltaje y la corriente a cabo y el termistor corrió bien.
[IMG] [url]http://i56.photobucket.com/albums/g171/bonou12/IMG_0024-1.jpg[/url] [/ IMG]

El S-10 utiliza la misma parte, M60 065, y está montado en el tablero de sintonizador. Se ha confirmado que esta parte de Digi-Key se solucionará el S-10 también.

suerte y sal U2 [/ quote]

Muy buena orientacion,tambien lo que falla mucho es la fuente de alimentación del openbox s9,los condensadores que trae son muy malos y se quedan sin potencia estaria muy bien sin algún colega pone el esquema de estos receptores de sátelites que están a muy buen precio.
un saludo

luisanimal67 01/01/2020 23:51

puedes subir las imagenes bien, no se pueden ver, gracias


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