Echostar 3600 PSU help

Sha786

Member
Joined
Sep 12, 2004
Messages
5
Reaction score
0
Points
0
Age
50
My Location
Manchester
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

cerca trova...
Staff member
Joined
Jan 1, 2000
Messages
16,226
Reaction score
4,197
Points
113
Age
81
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

Sha786

Member
Joined
Sep 12, 2004
Messages
5
Reaction score
0
Points
0
Age
50
My Location
Manchester
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

cerca trova...
Staff member
Joined
Jan 1, 2000
Messages
16,226
Reaction score
4,197
Points
113
Age
81
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

Member
Joined
Sep 12, 2004
Messages
5
Reaction score
0
Points
0
Age
50
My Location
Manchester
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

cerca trova...
Staff member
Joined
Jan 1, 2000
Messages
16,226
Reaction score
4,197
Points
113
Age
81
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
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

Member
Joined
Sep 12, 2004
Messages
5
Reaction score
0
Points
0
Age
50
My Location
Manchester
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

Member
Joined
Sep 12, 2004
Messages
5
Reaction score
0
Points
0
Age
50
My Location
Manchester
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

cerca trova...
Staff member
Joined
Jan 1, 2000
Messages
16,226
Reaction score
4,197
Points
113
Age
81
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
 
Top