Oscilloscope for TV repair service

[bhgsmservis]

Hi,

My speciality is repairing mobile phones, tablets, pc and TV sets. My new area is repairing graphic card.
I am thinking to buy oscilloscope for diagnostics tv sets, graphic card, pc.
My favourite is OWON HDS242 (40MHZ, 250MSa/s), handheld oscilloscope and ddm.

Main guestion is, is this scope with 40MHz and 250MSa/s suitable for this purpose ?

Please advise me.
BR

[stj]

Re: Oscilloscope for TV repair service

you need a minimum MHz of 5x the signal you want to see.
40MHz is only good for looking at psu ripple

[eccerr0r]

Re: Oscilloscope for TV repair service

When was the last time anyone fixed a TV with an oscilloscope here lately, curious...

Exceptions:
- Analog/CRT TVs. They are obsolete in the USA.
- Power supplies of a TV. Well, that's a power supply.

So, how did you use a 'scope to fix a LED backlit TV? Are oscilloscopes obsolete for anything but vintage audio and power supplies?

[bhgsmservis]

Re: Oscilloscope for TV repair service

When repair tv set oscilloscope can use for check smps, in main board can check eeprom and nand is comunicate with cpu.
Also can use to check graphic card, check mosfet ,...
For led tv backligt we dont nead scope, I know.

Bur what to buy? Dont have experiance whit oscilloscope.

[stj]

Re: Oscilloscope for TV repair service

how much you want to spend?

[bhgsmservis]

Re: Oscilloscope for TV repair service

how much you want to spend?

First I look Hantek DSO2C10 (250EU), second OWON HDS2102 (100MHz, 500MSa/s) price is 185EU, but for my budget is OWON HDS262 (40MHz, 250MSa/s) it coste me 115EU.

[klendatu]

Re: Oscilloscope for TV repair service

hi
rigol is a very good brand