I have an HP LC3272N 32" TV that the power supply board shorted out on the metal plate it mounts to. The board is missing so I don't have a part number and I can't find a web site that lists t

If you found any bad caps I would suspect that board--look closely again at the caps--even if puffed a little----

it possibly you have bad power supply board that need to be replace or repair.

Hello,

This issue is related to a power problem in as much as the TV turns off on it's own.

The problem is consistent with overheating on the power supply board of the TV. it might have worked fine in the past, but that's electronics for you. Power surge, irregular power supply, excess power supply, etc can affect the unit thereby making it to misbehave.

The power supply board of the TV has few capacitors and IC. If any of these IC's gets short or become weak, it can cause the TV to turn off on it's own.

When current passes from electric outlet to the power supply board of TV. The current also goes to the weak/faulty part, then the current stops or slow and the board overheats and TV shuts off on it's own.

To solve this issue, check the power supply board and read it with a meter and continuity tester, in order to detect the faulty part and replace the faulty part on the board which is short due to which power supply board

You can buy these capacitors at any Fry's or Radioshack store or you can order them online at vendors like "mcmelectronics.com"(look for electrolytic capacitors). After replacing these capacitor(capacitors) most likely the normal operation will be restored. Or you can by a refurbished complete power board from www/shopjimmy.com to save you some stress.

Note: There may be also some other causes for this symptom ,like a defective T con board ,or main board,but the bulged top capacitors are the most common cause for this issue.

If you don't have the ability to read the fault, then you might be needing the help of a repairman or you can call a friend that has the ability to help you out.

I wish you the best of luck.

Regards.

Good day!!!!


That problem is cause of shorted bridge diode or power mosfet..

just see the picture below to see the image of bridge diode and power mosfet..



If you don't have a tools or you have no electronic background you only have to is order the new power supply board..

I hope this solution will be helpful..Thanks for using fixya....

Most common problem with all LCDs and Plasma is Bad Capacitors on power supply board they will be swollen or vented on Top. I would call a Repair shop and ask what they charge to check it out and if they offer to subtract the check out Fee from the repair Bill . Thats what I do when sets are bought in example if check out fee is 50.00 and I tell you it will cost $125.00 to repair set and you say Fix It, then when you come to pick up set Repair bill will be $75.00
Price the cost of a New set ,compared to having set repaired.

hi,
You have to check the power supply of you tv for any voltage missing. also check the back light inverter board for any short circuit in it. Inverter transformers in the back light controlling board can become faulty.Three blink indicate the power supply have some problem. First of all replace all the electrolytic capacitors in the power supply board. If filter capacitors in the power supply is bad then this problem can occur.
ok

Hi,

Here are some basic steps that will help you fixing the problem.

I'm assuming that your unit is dead set without an standby LED light and your outlet is live.1.Power cord - check the cord it might be opened (no continuity).This is due to frequent bending,pulling. 2. Power switch - check for dry joints, open contact. 3.Check the internal fuse- sometimes the fuse fail because of the power surge, replacing with new one will cure the problem, If this is the case I would advice you to use surge protector/AVR (Automatic Voltage Regulator). However if the fuse blew again this is an indication that you have a shorted parts in the power supply, you may visit the linkhttp://www.fixya.com/support/r8053361-fuse_keeps_blowing for more info. If no reaction and still the unit didn't power up then you have an open parts on the power supply.

4.If you see that the fuse is intact , don't attempt to touch anything because there some fatalcomponents stored electricity enough to hurt you with a simple mistake only. I would advice you to look for a professional to troubleshoot the power supply. If you want to repair it yourself make sure that you have necessary tools and test instrument. First check bad solder joints(re-solder all cold solder), leaky electrolytic capacitor(sometimes it has bulged at the top but not all, you better have a capacitor checker), open/shorted regulator transistor/IC(mounted in heat sink), open fusible resistor (caused by shorted regulator Transistor/IC), shorted zener diode.

You may also replace the entire power supply board, click this LINK.

Hope I helped you.

Thanks for using fixya.

Jdvillanueva

Hi Joseph,

Make sure that you replaced the fuse with exact ratings. Low ampere ratings will not handle current as what the original fuse installed. If still fuse keeps blowing after replacing with the same rating, this is an indication that you have a short on the power supply section. It can't be fixed by replacing the fuse alone. Short usually near the AC line where parts like the following are present.

1. Power Cord - even very low of chances but still to be check.
2. VDR
3. Rectifier diode
4. Main filter electrolytic capacitor
5. Voltage regulator I.C.

This is the common parts that might be shorted and made the fuse blew. You may visit the linkhttp://www.fixya.com/support/r8053361-fuse_keeps_blowing for more info.

If you don't have necessary tools and test instruments, and can't do the job yourself, I would advice you to look for a professional to troubleshoot the problem. Don't attempt to work in the power supply if you don't know the safety precaution.

You may also replaced the entire power supply board. Click this LINK to order online.

If you are near to repair shop, you may bring the power supply board to them and isolate the shorted parts, you will save some money rather than sending the entire unit.

Hope I helped you.

Have a nice day!

Thanks for using Fixya.

Check your power supply for popped capacitors.

They look like these:



Replace with SAME uF value and HIGHER Voltage value. EX: 1000uF 10v --> 1000uF 35v


Thank you!

hp told me to buy another tv bad mother board 625.00