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Equipment Repairs => LCD TV forum => Topic started by: Jabboy on January 03, 2013,03:59:28

Title: Sony KDL-40S2030 flashing red standby light 4 times
Post by: Jabboy on January 03, 2013,03:59:28

Hi Guys,

Hope someone can help me on this.
I have this TV which when plugged in turns on for about 3 seconds then immediately switches off leaving the red light flashing 4 times, pauses and then repeats this process.
anyone have an idea on how to diagnose the fault on this unit?
As always, any help would be much appreciated

Title: Re: Sony KDL-40S2030 flashing red standby light 4 times
Post by: jordan on January 03, 2013,04:11:29

Chassis WAX2
Check inverter (Q-501,FET Q-601;fuse LF-10/7A,reflow inverter transformers)

Title: Re: Sony KDL-40S2030 flashing red standby light 4 times
Post by: Jabboy on January 04, 2013,01:29:08

Thanks Jordan,

I have replaced the whole inverter but still the same.
However the one i have replaced with came off someones storage so may not be working too.
when u say reflow transformer, what do u mean by that sir?

Title: Re: Sony KDL-40S2030 flashing red standby light 4 times
Post by: t1412 on January 04, 2013,01:41:14

resolder the transfomer!!

regards
shaun

Title: Re: Sony KDL-40S2030 flashing red standby light 4 times
Post by: Jabboy on January 04, 2013,03:27:54

Thanks Shaun.

This Inverter PCB2676  has non of the components he has advised me to check and 10 Transformer which I will i will fresh solder.
ay further advise? will update if this works

Title: Re: Sony KDL-40S2030 flashing red standby light 4 times
Post by: cheeky2 on January 08, 2013,14:06:45

I suggest you replace both inverters one set on the left and one on the right. I presume you have looked underneath the inverters as there are components underneath!

Title: Re: Sony KDL-40S2030 flashing red standby light 4 times
Post by: clark97 on January 09, 2013,21:11:15

Check the bridge rectifiers reservoir caps.

Title: Re: Sony KDL-40S2030 flashing red standby light 4 times
Post by: marky mark on January 10, 2013,03:39:46

Just to check.

the inverter is in 2 parts and only down the left hand side, the components mentioned aren't on it & the bridge rectifier and reservoir cap is still in the PSU?

Title: Re: Sony KDL-40S2030 flashing red standby light 4 times
Post by: cheeky2 on January 11, 2013,05:29:21

My mistake i was thinking of the 46S2030 which has the inverters both sides!

Title: Re: Sony KDL-40S2030 flashing red standby light 4 times
Post by: clark97 on January 12, 2013,00:04:54

Yes 450v caps in psu.

Title: Re: Sony KDL-40S2030 flashing red standby light 4 times
Post by: marky mark on January 12, 2013,01:40:59

So you think the bridge might be short then? No problem, looks like the set is fixed, he's not replied anyway :stupid:

Title: Re: Sony KDL-40S2030 flashing red standby light 4 times
Post by: sparky on January 12, 2013,06:28:31

thats what happens  no result posted i try when i find the cure  :051bye:

Title: Re: Sony KDL-40S2030 flashing red standby light 4 times
Post by: marky mark on January 12, 2013,08:44:00

See, I'm different. If someone asks a question I reply, especially on a free forum, who gets paid for this help then? Or is it just free?