some of you just happened?

[valrug]

Re: some of you just happened?

I redid the tuning and I'm testing if the defect occurs later
the implant and the parabola are sure that they work
if there will still be the default I think I'll have to buy a new tuner ...

[kalpikos]

Re: some of you just happened?

...I think I'll have to buy a new tuner ...

Are you sure that the problem is your tuner ?
Maybe you have faulty board.
In this case, it's better to buy a new box.

[valrug]

Re: some of you just happened?

later open another decoder guarantee (always Chinese ......) and try to replace the tuner
in the meantime I found on the net a change by replacement of a capacitor

[valrug]

Re: some of you just happened?

I packed the other tuner decoder and I did cross-tests
the result is that the tuner works
the problem is on the motherboard
I noticed, however, that one or maybe two capacitors are a little raised
I'm going to buy them new to try to replace them (last hope)

[kostis]

Re: some of you just happened?

Just have in mind that there must be a reason (most times heat) that those capacitors raised so it might work for a while and then you are going to have a problem again. have a plan B if you don't want to be without a receiver for a long time.

[valrug]

Re: some of you just happened?

Just have in mind that there must be a reason (most times heat) that those capacitors raised so it might work for a while and then you are going to have a problem again. have a plan B if you don't want to be without a receiver for a long time.

is true
but given the ridiculously low price I try to see if it works
I read that sometimes the poor quality of components or power surges can cause this defect

[kalpikos]

Re: some of you just happened?

Oh my friend, bad news...

You have to find on the net a schematic diagram of the electronic circuit of your board, and then try to find these capacitors.
Also you can get some photos of your board (capacitors) in order to help you more.

[valrug]

Re: some of you just happened?

the scheme was not able to find
capacitors that appear damaged are these two in yellow
(left more clearly)

[kalpikos]

Re: some of you just happened?

Can you read something over the board where the capacitors are?
e.g. C225 , C256 , C254 ....

moreover,
The capacitors have a value
e.g. 4700uF / 10V

Can you find something over them?

[KVF1966]

Re: some of you just happened?

Raised by the capacitors on the printed circuit Board does not affect the operation of your receiver can be operated for a long time. The scheme can be found only with the manufacturer of the equipment. Replace the capacitor not be a lot of work, but be careful not to damage the circuit.

[mahrkpat]

Re: some of you just happened?

the scheme was not able to find
capacitors that appear damaged are these two in yellow
(left more clearly)[ATTACH]76220[/ATTACH]

What exactly do you mean by raised?
1.Have the capacitors changed colour and bubbled?
2.Or loose and lifted away from circuit board?

If it is number 2 then pressing them down and applying a little solder with
soldering iron might fix the problem.

[valrug]

Re: some of you just happened?

capacitors that appear damaged microF are from 2200 and 6.3 V
will replace them with others like that I got from an old motherboard pc
But tomorrow I will work to avoid damage to the decoder
I also found in many network diagrams and measurements to check decoder

[kalpikos]

Re: some of you just happened?

capacitors that appear damaged microF are from 2200 and 6.3 V
will replace them with others like that I got from an old motherboard pc
But tomorrow I will work to avoid damage to the decoder
I also found in many network diagrams and measurements to check decoder

Good luck to your project

Be careful with the solderings.
If you don't have a good Soldering or
don't have any experience, don't do that by your self.
You may damage your board.

Go to specialist electronic repairer.
The capacitors you need are very cheap.
Don't use different from them.
You can find them easily at your local electronic store.

[valrug]

Re: some of you just happened?

last night I had the replacement and I also heated all welds including the largest tuner and it seems everything works!!
Thanks to all for your cooperation
now seen that there are, I try to make some measurements according to the patterns that I have attached to this post

http://www.satlover.eu/forum/dm-800-hd-other-files/47189-test-resolve-a-malfunction-dm800hd-clone.html