I began having problems with my receiver about a month ago. I would power it on and it would stay on for approximately 30 minutes and would go off. The length of time tha it will stay on has gradually reduced to the point that it goes off immeditely after you power it on. When you power it on "Main Vol." flashes accross the display. The unit is approximately 6 months old.
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The one that is heating up and shutting down could have a shorted output. Try removing all the speaker wires. If it still heats up and shuts down, it probably has a bad output stage.
On the one displaying the DSP ROM error, you may want to try a factory reset. using the following sequence:
Should the operation or display seem to be abnormal,
reset the unit with the following procedure.
The SR4600 is turned on, press and hold the
7.1CH INPUT and ATT buttons simultaneously for
3 seconds or more.
USE ONLY WITH SERIES II ELECTRONICS.<br />
Older Transmitters and Receivers will not work with these new
electronics. There are no Security Code Switches inside the Door
Operators, Transmitters and Receivers.<br />
To Program Receiver <br />
Step 2-1 Locate the Learn Code Button and Radio Signal Indicator on the Power Head Receiver of your Door Operator.<br />
Step 2-2 Press a Transmitter Button once within 30 seconds.<br />
Step 2-3 Press and release the Learn Code Button<br />
• The Radio Signal Indicator will blink approximately 2 times per second.<br />
• The Radio Signal Indicator stays lit - SOLID.<br />
Step 2-4 Press the same Transmitter Button within 30 seconds.<br />
• Radio Signal Indicator will go out.<br />
NOTE: If a second Transmitter Code is not confirmed within 30 seconds or
if a different Transmitter Code is sent, the Radio Signal Indicator
will blink approximately 4 times per second, then programming will
stop. If programming stops, repeat Steps 2-2 through 2-4.<br />
Step 2-5 Repeat Steps 2-2 through Step 2-4 for each Transmitter, Wireless Keypad or other access device to be learned.<br />
NOTE: A maximum of 7 Transmitter, Wireless Keypad and other access
device Codes can be stored into Receiver Memory at one time. If a
Transmitter becomes lost or if you want to delete a Transmitter,
Wireless Keypad or other access device, proceed to ERASING ALL RECEIVER
<span style="font-weight: bold;">Multi-Button Transmitters</span><br />
NOTE: Only ONE button of a Multi-Button Transmitter can be programmed
into a single Receiver. The other buttons are to control other Door
NOTE: If you are replacing a lost or stolen Transmitter:(1) Erase ALL
Transmitter Codes from the Receiver memory. (2) Reprogram the Receiver
with the remaining Transmitters Codes.<br />
<span style="font-weight: bold;">Erasing All Receiver Memory</span><br />
Step 4-1 Press and HOLD the Learn Code Button for 10 seconds or until Radio Signal Indicator goes out.<br />
<span style="font-weight: bold;">ALL Transmitter Codes are erased from Receiver memory.</span><br style="font-weight: bold;" />
Step 4-2 Reprogram the Receiver with the remaining Transmitter Codes (Repeat Steps 2-2 through 2-4).<br />
<span style="font-weight: bold;">Step 5-1 Battery replacement</span><br />
• Slide Battery Cover off of Transmitter back.<br />
• Replace with new batteries.<br />
• Slide Battery Cover back on.<br />
<span style="font-weight: bold;"><br />
Step 5-2 Visor Clip installation</span><br />
• Slide Visor Clip into back of transmitter until it snaps into<br />
If you can monitor the supply to the LNB, you may find it is low, unplugging it when the decoder is powered up allows for more power. I would change the power supply capacitors if more than a couple of years old.
Three months ago I had the same problem. My wife paid over $300 for the
radio, the portable boom-box and subscription less than 2 years ago. Sirius
offered no help or discount on a new radio. Guess they follow the
Microsoft doctrine because they suggested I upgrade to a new radio.
feeling frustrated, I took the receiver apart, thinking that a stray
voltage on an IC ping maybe causing the problem. It was only a guess.
I don't even have a wiring diagram At any rate, once I had it apart,
I used a small flathead screw driver and drug it (lightly) across all
IC pins, possibly in an effort to drain the voltage. Please do this in
a low static area.
When I put everything back together, the
receiver worked. It's been working good the up until about 2 weeks ago,
when the same problem began again. I just finished the same process
and the receiver is working again.
I don't advocate this for anyone who doesn't know how to handle electronics.
I'm just very disappointed in Sirius for not admitting the problem and providing no discount for a newer model. I have a $10 clock radio that's 9 years old. Guess what, I don't have to take it apart every three months to keep it working.