Question about Directv HR10-250 DTV Receiver

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Hr10-250 dtv HD receiver

I have one with no lnb voltage out.The outputs are not shorted like a bad zener,just no voltage. Thanks

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Re: hr10-250 dtv HD receiver

First, verify the oscilador circuit of the power.It´s normal the IC is damage or the mosfet.
Second, desconect the principal board and verify if has tensions on secundary part.If positive,the problem is on principal board.

Posted on Feb 12, 2008

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What does lnb short mean

the cable may have went bad or receiver, but check or replace the cable first

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Hi beltone669,

Our 625 receiver uses DP technology. A legacy LNB would not work with the receiver. You would need either a DP Dual or a DPP Twin. If you have any other questions, let me know!

Tommy Faust
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Hardware. Check the power source, the 18v is used only for the LNB.

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I got this message lnb short ,what can i do ?

Start at any outside exposed connection of your Sat cables. They get water in them in the bad weather. The "Barrel" F connector then needs changing and dry out the mates. Sloppy installers do not put in "Rain Loops" (a loop below the connection so water runs down to loop to drip instead of runing into the connection), rubber boots, or Silicon protective coatings at the connections. 4 way Diseqc supplied with STB should have caps on the unused ports to keep moisture out. Good luck.

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I do not have an schematic for this receiver. This receiver might not use LM317 or TIP42C but a different voltage regulator, try to locate where the 20 volts line from the power supply and follow it to anywhere near the LNB tuner circuitry. This type of IC is normally mounted on a heatsink.
Lastly if you are a subscriber, give you satellite service porvider a call to get a replacement.

Nov 08, 2008 | Philips DIRECTV H20 DTV Receiver

1 Answer

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You could check the voltages yourself to see if they are low. The horizontal polarity needs about 19 volts and the vertical polarity about 14 volts to work properly. If those voltages are lower by 25%, the receiver might failed to scan and that is when it locks up because is trying to find signal. The other issue could be a defective power supply if the receiver does not work after that 4 hours. There could be some capacitors that lost their dielectric strength causing the drop in voltage.
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1 Answer

Dish Network - Dish 500 Satellite 110 is not being recognized

You will need a DP or Legacy twin or quad, or DPP twin without using an external switch. If you use Legacy Duals, or DP Duals you will need a switch. USUALLY a SW21 is used to combine the signals but you may have a different one in use if at all.

The primary thing to remember when using a switch is that you must use the same type of LNB as switch e.g. Legacy switches with Legacy LNB's and Dish Pro switches with Dish Pro LNB's.

Check your LNB type. Legacy LNB's have only a Dish Network Logo on them, Dish Pro has DP on them and DPP have DP PLUS on them.

One of three things could be the cause:

1. Line of site. Must be clear of all obstructions to ensure adequate signal.

2. You have a faulty switch, or conflicting LNB and switch, or no switch at all.

3 you may have a bad port on the LNB.

As a fail safe check that your mount is level and plumb. You also may have the dish pointed directly at 119. Check the Skew and elevation settings as well. If LOS IS THE ISSUE YOU MAY NEED TO RELOCATE THE DISH OR REMOVE THE OBSTRUCTION.

In some extreme cases microwave towers and High Voltage lines also pose a problem but doubt this is the case for you.

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that's not true i work for dish network if u have an LNB drift of -8 or +8 you can get a free lnb service call and they can come out n fix at no charge

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2 Answers

Directv h20 receiver has low volyage to the lnb.

Check inside the receiver for a defective LM317 IC or a TIP42C transistor, but before that you should check for proper voltage from the power supply to that IC.
LM317/TIP42C control the switching of voltages that power up the LNB, you should be getting 14 volts for vertical channels and 18 volts for horizontal.
Good Luck.

Mar 08, 2008 | Philips DIRECTV H20 DTV Receiver

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