On 8/30/2019 at 9:05 PM, Naam said:

posted March 9, 2009

in january 2006 i bought a Samsung 67" LDP TV and 139,000 Baht and in august the same year Mrs Naam bought the same model for "only" 118,000 Baht. a few weeks ago my TV conked off, not completely but intermittendly on/off on/off on/off. so i confiscated the TV from the Mrs and threw the ball in her lap.

 

"engineers" from Numchai, Pattaya concluded "motherboard gone" and took the unit for repair. a few days later we were told that it will take at least one month as the part has to be ordered in Korea, total cost something like 29,000 Baht more than one month passed and after enquiring we were told by Samsung Service Center, Pattaya "solly, lepair no can do". we asked "vhat ze eff does zat mean?" and "vhat shall vee do now?"

 

Samsung, BKK got involved, called me today and i understood that due to the fact that the TV is more than three years old we can respect a refund of 33%. today it turned out that Samsung is offering cash "new price LESS 33%" which i think is a very fair settlement. by the way, LDP models are not produced anymore because Samsung had obviously too many problems with that rather unique but excellent system. i do hope that the confiscated TV will last some more years as Mrs Naam will buy a Plasma or an LCD for herself 

I guess you are trying to question the 'easy repair' of AC inverter by comparing with a 2009 TV repair and your experience with Pattaya electronic repair engineers.

 

Very few electronics repair engineers in the Chonburi province specialise in power electronics. There are many in Bangkok.

 

The power electronics of inverter boards have common configurations where decent test gear makes fault location quite straightforward. If a processor is alive we can usually scope its IO and peripheral circuits using basic data sheets. The repair engineer will quickly become familiar with manufacturers design after repeat repairs on similar boards.

 

 

34 minutes ago, Fruit Trader said:

I guess you are trying to question the 'easy repair' of AC inverter by comparing with a 2009 TV repair and your experience with Pattaya electronic repair engineers.

 

Very few electronics repair engineers in the Chonburi province specialise in power electronics. There are many in Bangkok.

 

The power electronics of inverter boards have common configurations where decent test gear makes fault location quite straightforward. If a processor is alive we can usually scope its IO and peripheral circuits using basic data sheets. The repair engineer will quickly become familiar with manufacturers design after repeat repairs on similar boards.

 

 

what part of

Quote

Samsung, BKK got involved, called me today and i understood that due to the fact that the TV is more than three years old we can respect a refund of 33%.

is it you didn't understand? are you trying to tell me 

 

Quote

Very few electronics repair engineers in the Chonburi province specialise in power electronics. There are many in Bangkok.

but Samsung Headquarters Thailand located in Bangkok has no access to qualified service engineers?

 

yawnnnn...

1 hour ago, Crossy said:

 

Absolutely!

 

10,000 BTU = about 3kW. https://www.rapidtables.com/convert/power/BTU_to_kW.html

 

With a COP of 3 that will use about 1kW of power.

 

So 1kWh per hour is used.

 

Dead handy when running in reverse (heating) as you can get 4kW of heating for only 1kW of electricity.

Ah the COP.  I forgot about that (but now that I'm a septuagenarian I'll blame on that).  But, the COP is not a given (I'm sure you knew that).  Many years ago my dad had a heat pump in Arkansas that worked pretty good until it got below about 20F at which point the electric heaters at COP of 1 came on.

 

I guess the BTU rating just bugs me.  Especially when the physical difference between say an 18K and 24K is not that obvious.  I just wonder how much "bigger is better" is sales witchcraft versus reality.

51 minutes ago, Naam said:

what part of

is it you didn't understand? are you trying to tell me 

 

but Samsung Headquarters Thailand located in Bangkok has no access to qualified service engineers?

 

yawnnnn...

But but the subject is AC's not Samsung TV's. You made the usual TV style sweeping statement 'AC inverter boards are difficult to repair' when often they are not. I corrected it and you threw your teddy.  Another topic drifter ... yawn.

I have been told that a rat in the e!electrical harness of an auto can render it useless.  It becomes a homeowners insurance claim, according to Tucson Toyota.