Preher-Tech Blog: September 2009

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About Me

Preher Services: Edmonds, Washington, United States; JH Preher specializes in power supply, inverter and LCD TV and monitor repair. Send me an email johnpreher@gmail.com or visit www.preherservices.com

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LCD TV Repair E-Book

Popular Posts

Samsung HPT4254 (HPT4254X/XAA) BN44-00161A Power Supply Repaired.

To learn how I repaired this power supply email johnpreher@gmail.com HPT4254X/XAA, BN44-00161A Professional Repair: If you are interes...
Make Your Own Ring Tester

In this post I will share with you all the info you will need to make a homemade ring tester also called a FBT/LOPT tester, note F...
Philips 37MF321D/37, 37MF331D/37, 715T2056-1 Power Supply Repair

We have been receiving quite a few 715T2056-1 power supplies for repair from Philips 37 MF 321D/37 and 37 MF 331D/37 LCD TVs. The failure...
Samsung HPT5044 (HPT5044X/XAA) BN44-00162A power supply repaired.

To learn how I repaired this power supply email johnpreher@gmail.com HPT4254X/XAA, BN44-00162A Professional Repair : If you are inter...
HPT4234, HPT4254,HPT4264, BN44-00161A and BN00162A power supplies repaired

If you are interested in having a BN44-00161A, BN44-00162A or any other power supply repaired professionally then email johnpreher@gmail.co...
Homemade ESR (Equivalent Series Resistance) Meter

Here is a great article I wanted to share with all of you. It will show you how to make your own ESR meter at home. This is a fun project an...
Sony BRAVIA KDL40EX600, no power, APS-272(CH) power supply repair

Sony BRAVIA KDL-40EX600 Failure symptom: No power Upon diagnosis of the power supply I found that power MOSFETs Q6101 and Q6102 we...
Typical electrolytic capacitor ESR values

This is a chart showing typical ESR values for good electrolytic capacitors. A faulty capacitor can often have a value that is 10X the v...
Sony BRAVIA KDL-55EX500, no power, APS-256(CH) power supply repair

Sony BRAVIA KDL-55EX500 Failure symptom: No power Upon diagnosis of the power supply I found that power MOSFETs Q6304 and Q6305 we...

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