Hello all,
I have an issue with a Bash amplifier of a subwoofer (ENERGY ESW-V8 which is another brand of Klipsch and similar as Klipsch RPW-10 or Synergy Sub-10). I have a fault on the primary side i think. I'd like to be sure that the secondary side of the SMPS is working as expected. Thus i could also check the remaining part of the sub, i mean all what is beyond, the speaker itself....I could know if all is working except the primary side of the power supply and i could isolate the faulty only on the primary side.
Now that i explained you a bit. I have a laboratory power supply 3 output with 0-30v 2.5A each. My question is simple:
Where should i plug my lab PSU + and - on the amplifier SMPS. I know it has to be just after the transformer, i think its near the secondary rectifier diodes. But i need to know exactly. Also i think i need to have 1 lab PSU output with 15V on the 7815 and 7915 regulators and the other output to 25V on the secondary output diodes. Can you give me some hints or document that could help me go further?
Here a picture of the SMPS board:
http://i.imgur.com/L14Q8.jpg
A video that show almost the same amp and SMPS board:
https://www.youtube.com/watch?v=E3AG7YmGsik
A topic on the diysmps board which show some schematics close to the one on my board:
http://www.diysmps.com/forums/showth...PS-DIY-Rebuild
Thank you, by the way i really like this board, we can find a lot of useful informations in english, very skilled persons, regards.
-
Vizio e601i-A3 - Has Sound and Display, But No Backlight - Bad Power Supply Board or Bad LED Bulbs ?I was given this TV from my great uncle. He said it just wouldn't turn on one day out of nowhere, replaced the TV, and gave it to me to possibly fix and use for myself.
Upon bringing it home and plugging it up, it showed a standby light.
I powered it on and without a flashlight, the display showed the "V" but the lighting is very dim, but visible.
The screen seems to blackout and stay black, but with a flashlight I can see the display.
With my Playstation 4 connected via HDMI, and running a game I can hear sound.
Assuming... -
I did not have any 27uf @ 50 volt capacitors but one nice thing is that it has enough room for two capacitors in parallel a 22uf and a 4.7uf @ 50 volts 22 plus 4.7 equals 26.7uf which so very close to 27uf I will show some pictures of it sometime tomorrow
This is one of the shit est boards I seen in a very long time and it was the daughter board the traces just lifting off the board I had to use the capacitor leads to repair the the traces and the main board is not any better because I had to repair several traces for the daughter board to the main board
After all of... -
Hi, this is my personal laptop, which the original board (lets call it Board A) blew up PU8700 (TPS51486), making a hole on the board, i had left the laptop at my desk one day with the battery fully charged and didn't touch it for a week, but when i tried to turn it on it didn't
Thought the battery was dead, so i plugged in the charger then tried to power on, the power LED blinked once, charged LED still orange, unplugged the charger, plugged in again and I noticed the "magic smoke" smell, so i unplugged the charger, removed the back cover and saw the blown IC (the "magic... -
Hi all, I just need to know that, can i use SMPS type power supply to test and short circuit detection on a laptop motherboard?
I saw 95% of repair guys are using only Linear bench power supply. linear bench power supply is pricy, thats why i planned to get one SMPS supply.
i know that in linear power supply the noise will be very low comparing to SMPS supply.... -
Hi everyone,
I am trying to fix a samsung washinmachine power supply main board.
I already replaced it with another one to fix the machine but i want to try understand the issue with the old board.
Therefore i hope to be able to get some help to explain what to check in order to troubleshoot.
The power supply board reference is the following: DC41-00189a
I have followed one thread (https://www.badcaps.net/forum/troubl...ingmachine-rel...