- MAP3202 LED Driver IC Failure In 42″ LED TV
- LG LED Television Model 32LB561U Dead, Power On LED Red Now Repaired
- Power Blinks In LG LED TV Repaired
- Shorted LED Driver Mosfet In Hisense LED TV Repaired
- Restored Philips LED TV Fully Water Logged In Floods
- Samsung Smart TV Powering On/Off
- Blinking Stand By LED Light In LED TV Repaired
- No Tuning Problem In LED TV Repaired
- Sanyo DP40142 LED/LCD TV Repair
- LED Backlight Problem In LG TV- Checked With LED TV Backlight Tester
Reverse Light in Automobile Repaired
My automobile was presenting difficulties with the reverse light from the beginning when my father bought it. The complaint was the reverse light worked rarely.
In the gearbox, which is located down the automobile there is a switch and its function is to send 12 volts to both light bulbs (2×21 watts) in the rear to indicate the reverse is selected.
The culprit of this situation was the switch located in the gearbox. When it broke it was replaced and so on. It happened many times. But one day I took a decision, not to buy more switches for three reasons:
- It’s very hard to get in the market.
- Every time you buy it the price is more expensive.
- I was not going to buy it all my life.
I had to find out why it was breaking constantly. So I took a radical decision: to connect an intermediate relay among the gearbox and the rear light bulbs (2x21watts).
In this case I got a relay from an unused UPS (Uninterruptable Power Supply) as shown in the photo below:
As you can see this relay could support some Amps per contact, and it has two poles with two contacts open normally, which were connected in parallel to improve the current (Amps) rate.
The other step was to calculate the Amps consumption by the Ohm’s Law.
looking for I:
P= 2 (light bulbs) * 21 watts = 42 watts.
Voltage = 12 volts (Battery)
I= 42w/12v= 3.5 Amps
Conclusion: I do not know how the manufacturer did not realize of this malfunction. This relay coils support the 3.5 Amps with no difficulty. This relay, already connected was hidden down the dashboard and it has been working for about 20 years without any damage. Mission accomplished.
This article was prepared for you by Humberto Rodriguez, one of our ‘Master Authors’ from Cuba.
Please give a support by clicking on the social buttons below. Your feedback on the post is welcome. Please leave it in the comments. If you have electronic repair articles to share with us, please contact us HERE.
P.S- If you enjoyed reading this, click here to subscribe to my blog (free subscription). That way, you’ll never miss a post. You can also forward this website link to your friends and colleagues-thanks!
Note: You may check his previous repair article in the below link: