Re: RCA Sound Bar RTS7010B not turning on
I would like to apologize for my inactivity in this thread. Many events happened at home that prevented me to even remotely make an attempt to continue trying to fix this sound bar or any other electronics related task.
After being able to buy a few basic new tools and a multimeter again, I replaced the AMS1117-ADJ | H1518 voltage regulator.
The new IC gets hot really fast after applying voltage to the board (same behavior before being replaced)
Voltage in PIN 1 is now 11.6v and...
hanswr
Member
Last Activity: 10-10-2023, 12:23 PM
Joined: 09-23-2018
Location: Katy Texas
-
Re: RCA Sound Bar RTS7010B not turning on
Thank you [B]budm[/B] for always providing a helpful hand.
I will check that information, do some further testing and come back if I have any positive results or questions.Re: RCA Sound Bar RTS7010B not turning on
Thank you [B]budm[/B] for always providing a helpful hand.
I will check that information, do some further testing and come back if I have any positive results or questions.Re: RCA Sound Bar RTS7010B not turning on
Thank you...Leave a comment:
-
Re: RCA Sound Bar RTS7010B not turning on
IC printed information
[B]AMS1117-ADJ
H1518[/B]
The big black cap reading is [B]12.7v[/B]Re: RCA Sound Bar RTS7010B not turning on
IC printed information
[B]AMS1117-ADJ
H1518[/B]
The big black cap reading is [B]12.7v[/B]Re: RCA Sound Bar RTS7010B not turning on
IC printed information
[B]AMS1117-ADJ
H1518[/B]
The big black cap reading is [B]12.7v[/B]Re:...Leave a comment:
-
Re: RCA Sound Bar RTS7010B not turning on
I apologize for the delay to answer and thank you again for your reply.
I have attached a new image with the readings from every electrolytic capacitor and the IC501....Leave a comment:
-
RCA Sound Bar RTS7010B not turning on
Hello.
Would you help me find out what is wrong with this RCA RTS7010B sound bar?
It does absolutely nothing when connected to the power supply, no LEDs, completely dead.
I cannot find the schematics online to know if it uses a fuse.
Power adapter is working fine, already tested that, the jack connector works too, not broken or loose.
Thank you very much in advanced.... -
Re: How can I keep this TV power board ON?
Thank you very much. I will try that.
It is the same board yes. That post did not get any more responses maybe because it was no longer related to troubleshooting a faulty TV. My first mistake was to reopen that thread asking this question about the power board.
I apologize. You can delete either one....Leave a comment:
-
How can I keep this TV power board ON?
Recently I broke the screen of a TV and I would like to re-use it as a LED lamp.
The only problem is that I don't know how to make the power board to provide the voltages without the main board and power button connected.
Would you help me identify the correct pins that I need to short (and how) to make this TV power board work as if the TV was on?
Thank you very much in advanced.... -
Re: Hisense 50h5c back panel problem?
When the TV is on STB mode I get these voltages.
21v
21v
0v
0v
12v
12v
0v
0v
0v
0v...Leave a comment:
-
Re: Hisense 50h5c back panel problem?
STB and any ground?
If so, can I just shot those to pins with a cable, or do I need to use a resistor?...Last edited by hanswr; 05-11-2020, 01:19 AM.Leave a comment:
-
Re: Hisense 50h5c back panel problem?
I have a question regarding this TV power board.
What pins do I need to keep shorted to make it work as if the TV was on so I can get all the voltages?
I have attached 2 pictures to show the connector to main board.
Thank you in advanced....Leave a comment:
-
Re: Hisense 40H3E No backlight
Thank you very much for that information. Wow I guess I got lucky then that I didn't blow up all the LED from the other strip. Lesson learned.
I will definitely try to buy a LED strip tester....Last edited by hanswr; 05-09-2020, 09:38 PM.Leave a comment:
-
Re: Hisense 40H3E No backlight
HI Hans! Cool name BTW
.
Thanks for your reply. How did you test the led strips? Do you have a led strip tester?...Leave a comment:
-
Re: Hisense 40H3E No backlight
The 94v is printed in both the original and the ones I have from another TV. That is why I went ahead to do the test, replacing one at a time. Unppluging tv power during each replacement and test....Leave a comment:
-
Re: Hisense 40H3E No backlight
Sorry. I guess we were posting at the same time.
So new led strips it is.
Thank you again for all the help and information....Leave a comment:
-
Re: Hisense 40H3E No backlight
The original led strips have 11 leds each, I have some leds strips from a another hisense tv that only have 5 leds each. Both work with 94v. I disconnected the original strips and plugged the 5 led ones and the four of them light up to what it seems full brightness.
Is this an indicator that the original led strips need to be replaced?Last edited by hanswr; 05-09-2020, 09:06 PM.Leave a comment:
-
Re: Hisense 40H3E No backlight
I finally managed to get 2 suction cups to properly remove the panel. I have access to the leds now.
Connectors seems to be fine.
These are the voltages on every led strip from too to bottom when the TV is on :
15.4v
16.4v
23v
17.4v
I have also recorded a video when I press the power button here is the link:
[url]https://youtu.be/NacRDqu4Ckk[/url]Re: Hisense 40H3E No backlight<br />... panel. I haveLeave a comment:
-
Re: Hisense 40H3E No backlight
I understand now. Thank you for the explanation.
I will try to buy some suction cups to properly handle the panel and check the led stripes....Leave a comment:
-
Re: Hisense 40H3E No backlight
Shouldn't the voltage on the main/power board connector remain stable and in normal range when the led stripes are disconnected?
It does exactly the same while the leds are disconnected, goes up to 100v and slowly stabilize to 47v....Leave a comment:
-
Re: Hisense 40H3E No backlight
Thank you for taking the time to reply and try to help.
Regarding the measure of the led driver chip, unfortunately I don't have the appropriate tools yet to do that without shorting the chip (magnifying glass, and super thin testing probes), but working on it.
I have attached a new picture of the back of the board as requested.
Also while measuring the voltages again in the let connector and the TV is off (stand by) the voltage is [B]37.4[/B], then pressing the power button the voltage goes...Last edited by hanswr; 05-07-2020, 01:07 AM.Leave a comment:
-
Hisense 40H3E No backlight
Hi everyone.
I'm trying to fix a Hisense 40H3E TV.
Symptoms:
- Back light is not turning on.
- You can see images with a flashlight pointed to the screen.
- Standby light is present.
I opened it up to get the voltage reading in the back light led connector. I'm getting 37 volts. There is no information printed on the board front or back regarding normal voltage ranges.
I don't know if this should be the correct voltage, I tried looking for a service manual or schematics to no avail.
How may I proceed...
No activity results to display
Leave a comment: