SONI HCD-RG66T problem with the speaker relay
you are a technician or just a curious who wants to know why this and because the other in any electronic equipment if it has x pieces is something they do not put them so that they are bridging if it is done with the fuses and also what to know how to study a little bit of electronics so you know why
thousand thanks friend
Cyril Perez Ga. For his answer the truth did not fix the electronic school but I would learn more here in the forum and I went. and internet
I asked this question to clarify this or they can help me to solve this problem, I know that you were in this forum and many experts on the subject and if so, what would be the problem that does not activate the reley? see if you can help me ... every fault resolved always de fi ne here for
that is useful for the other colleagues .. greetings friend cirilo perez ga
Good night everyone ...
friend Alejandro1994 thanks for the help I am far from the capital in this place and several technicians but they do not even have internet
so I help them to repair everyone through this forum thanks to colleagues who help me solve many problems ...
aora commented ... this equipment is from another technician and the design that was well and this was the audio when it was being adapted
For usb, I'm sure there's some short truth, I don't know ... and I already try it on the headphones and don't reley.
the 2 channels work but before the reley.
greetings and thousand thanks ...
Well, you will have to check the circuit that has to do with the control of the relay, from electronically the transistors that take care of this, the power supplies, to the order of the micro that sends the relay to operate. My advice is to check the service manual of this model and see everything related to the relay, how it works, the DC that it uses in the coil, who operates it, where the order comes from and ect .. I hope you solve. Salu2
A thousand thanks friend Alejandro1994 I read the service manual and download it
I tell him this team and they took out the flexes that work with the disc and he also doesn't have the optics to read the discs
Could it be that something has to do with this problem?
Cheers..
I do not think, the CD has nothing to do with the audio output, to review it calmly, in the morning freskito, without trouble, to do a thesis with the gg. Salu2
Good afternoon everyone ...
I tell you on the screen the spectrum of that movement gives the signal that the audio is working and no signal appears
protection is only that the reley does not operate and provides the headphones connecting and disconnecting and does not operate the reley
I commented otracosa but I could see that they took out the flex that connects the cassette mechanism with the side plate
Could that be the problem so that the reley does not work?
greetings to all thousand thanks for the help
Good friend Alejandro1994.
I commented that there is no 3.3v checking this voltage I should leave the control system ic501 and it is not coming out
yarevise the connections of the cn901 and cn502 and also check this short to see if something is preventing the appearance of that voltage
And everything is fine.
What will be the problem so that 3.3v does not exist?
Let's see if you can help me
thousand fat
Having a colleague, the front relay is operated by the q512, putting the GND to it by direct order of the micro processor. The other is the positive DC of the Relay comes from the high VDC of the tablet which lower it by means of the R539 1.5K 2W, verify that this R is correct, verify that the Q512 has in its base 3V approx, and that in its collector it Reflects 25V approx, if not yet activated. The other thing is that you have continuity from the CN901 FRONT RELAY connector to the base of the Q512 and from this to pin 87 of the IC501 microprocessor. If it still does not work then the microprocessor is not giving the
Order for some reason. Check that you have on pin 88 of IC501 3.3V, if this voltage is below because you have the protections being activated for some reason, the other is pin 79 of IC501 which is the one that detects if a headset is connected, there you have to have 0V , but the device is detecting as if he were stealing a hearing aid so he would never activate the relay. If pin 88 has less than 3V, check the Q502, disconnect it, which is one of those that triggers that pin, it is the transient that activates the protection from the power. Keep checking, tell me what you did. I hope you solve. Salu2
Good night friend
Alejandro1994
Now I ... I indicated and I thank you milgrasia greetings
Good night friend
Alejandro1994
I tell you
of pin87 of the ic501 control system to the base of
q512 if ay continuity is ok what is not ay is voltage
is at zero volts and in its collector the q512 is with
the 50v the r539 1.5k 2w is ok
on p8888 of ic 501 there are 3.3v ok now the problem is pin79 of ic501 are with 3v
now what dev to do? friend
Alejandro1994.milgrasias. Cheers
Well, I inform you my dear friend who just hit the spot, I anticipate telling him and sorry for the self-sufficiency, but that was what I was talking about when I sent him to connect and disconnect the mini jak of the hearing aid in the CN781 connector that is the one that connects the panel side with the headphone jack. pin 10 Headphone Detected, bridge it to GND with a cable or whatever you want, that should lower pin 79 of the IC501 the micro detect as there is no earphone and in turn send the relay to operate. I hope to be right. Salu2. Congratulations.
Good night friend Alejandro1994 ...
I already jumped the pin10 and pin4 bridge of the cn781 and now the relay is activated and the audio is already output in the vosinas ...
Thank you infinitely for helping me.
Now how do I see the solution? I'm a little lost since the forum was modified
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