Echostar 3600 PSU help

Sha786

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HI Guys

After a power interruption my receiver does not power up, I would be very great full if you could direct me where I can fine a circuit diagram or most common fault list with this receiver

Many thanks
 

Llew

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Sha786

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Thanks for your info

I have found when you heat up the PSU its works ok, is it the thermistor? if so what type

Many Thanks
 

Llew

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My Satellite Setup
Triple Dragon, Dreambox 8000, Echostar AD3000ip, TBS6522,6925,6983 PCie cards.
Gibertini 1.25m motorised dish driven by the AD3000, with either Inverto BU Quad or Norsat / XMW Ka LNBs . SMW 1.05m + 3 other dishes. Speccy: Promax HD Ranger+
My Location
The Flatlands of East Anglia
Could be the culprit. Should be several ohms if OK, dropping down to a lower value when warmed up with constant current (or externally heated up).

If you can concentrate a heat source on the thermistor when first switched on (hair dryer perhaps?) maybe it will prove whether it is indeed the problem.

Afraid I don't know the spec of it, although most series NTC thermistors in SMPS inputs should be similar.

Llew
 

Sha786

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Hi

I have checked the thermistor, reads 4.5ohms room temp and when heat is applied drops to 2ohms. I have replaced all the elec capacitor on primary side except the big elec capacitor (470uf 200V). Unfortunately I had a power cut and the receiver does not start up. Please help.

Many thanks
 

Llew

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Triple Dragon, Dreambox 8000, Echostar AD3000ip, TBS6522,6925,6983 PCie cards.
Gibertini 1.25m motorised dish driven by the AD3000, with either Inverto BU Quad or Norsat / XMW Ka LNBs . SMW 1.05m + 3 other dishes. Speccy: Promax HD Ranger+
My Location
The Flatlands of East Anglia
I can only point you to the Echostar schematic sticky at the top of this section, hopefully may be of some help for your 3600.

Llew
 

Sha786

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Thanks for your replay

I had a look at your diagram (fantastic), Had a quick look and unfortunately for 3600 PSU there are differences in components and locations. I will give it try, and let you know.

Many Thanks
 

Sha786

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Hi Llew

I got my receiver working at last. On the primary side I replaced
IP1 FS7M0880
IP4 TL431ACLP
TRP1 BT137X 600V
IC1 STRG6351
CP8 100nf
All electrolytic capacitors

I also had a problem with channel numbers/name appears in odd characters. I replaced on secondary side all electrolytic capacitors on 3.3V and 5V lines, including IC3 TL431ACLP.

KA431AZ = TL431ACLP
KA1M0880B = FS7M0880

Many thanks for your information
 

Llew

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My Satellite Setup
Triple Dragon, Dreambox 8000, Echostar AD3000ip, TBS6522,6925,6983 PCie cards.
Gibertini 1.25m motorised dish driven by the AD3000, with either Inverto BU Quad or Norsat / XMW Ka LNBs . SMW 1.05m + 3 other dishes. Speccy: Promax HD Ranger+
My Location
The Flatlands of East Anglia
Glad you got it up and running :)

That's quite an extensive repair job, I hope the time taken is well rewarded!

Llew
 
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