Echostar AD3600IP

[ekko star]

Bit of a barn find this one.

All in decent condition otherwise but invariably does not switch on. The LED display tries to light up and then dies.

Sounds like PSU capacitor issue.

Does anyone know the usual culprits known to fail? There are quite a few caps on that board !

Thanks

 

[Channel Hopper]

Could be both the components and firmware failure.

Post some pictures.

 

[ekko star]

Could be both the components and firmware failure.

Post some pictures.

It's a later Viaccess model so very unlikely the eeprom problem.

It will power on for a split second and die. Most likely dodgy leaky caps. There's too many and nothing looks leaking or bulging so it's a mission.

I will post pics up later

 

[Channel Hopper]

It's a later Viaccess model so very unlikely the eeprom problem.

It will power on for a split second and die. Most likely dodgy leaky caps. There's too many and nothing looks leaking or bulging so it's a mission.

I will post pics up later

There is a 3000 thread which references to the 3600 psu circuitry.

Thread 'Schematic For Echostar AD3000ip Power Supply'

Oct 20, 2005

I've drawn up a circuit diagram for the SMPS of this receiver. More for my own curiosity and not exactly of professional quality, however it shows all components including positioner relays etc.

It might come in handy for circuit tracing in the (likely) possibility of a fault occuring in the power supply.

Here's a list of the main semi's -

TR1- BT137 Triac

IC1- 1H0565 Power Switch

IC5- Power Switch (for motor drive)

BD- PBS606G Bridge Rectifier

IC2,6,8- L9941 Optocouplers

IC3,4,7- KA431 Prog.Shunt Regulators

D5- SB860 Schottky Diode

D13- U16C20 Power Rectifier

D16,17- P6KE6.8A...

• Llew
• Replies: 165
• Forum: The Work Bench and Soldering Station

 

[ekko star]

Some pics