40" Sony LCD KDL-40EX500 Seconds to black (6 blinks)

[ger10101]

Re: 40" Sony LCD KDL-40EX500 Seconds to black (6 blinks)

Hmm, cutting it worked. TV turns on perfectly, no dimming when it gets to the HDMI screen, its just full bright.

hello, how and where did you cut this wire, i am having the same problem. thank you for your helpe

[Vhelt]

Re: 40" Sony LCD KDL-40EX500 Seconds to black (6 blinks)

Back read and u find out what happen....

[cayers007]

Re: 40" Sony LCD KDL-40EX500 Seconds to black (6 blinks)

To anyone looking for the Dim Control Wire, I have posted a photo of the wire I had cut which resolved the issue with my EX400 stuck in a power cycle loop and receiving 6 Blinks. Please note that the backlight will run at full brightness when this wire is cut. Good luck!

[paulstef]

Re: 40" Sony LCD KDL-40EX500 Seconds to black (6 blinks)

Awesome thread, saved me hours of troubleshooting probably.
THANKS!

Removed DIM wire and it stays on.

Btw, the PWM frequency is 150 Hz and the duty cycle is stuck at 5% (350us positive pulse width).

Funny thing, while re-running the initial setup, the duty cycle increases to the currently adjusted backlight setting. Must be some firmware problem maybe. After the setup has finished it returns back to 5%.

[jeapel16]

Re: 40" Sony LCD KDL-40EX500 Seconds to black (6 blinks)

hi
It too late to answer for this tv but i would like to get expert opinions
so check mytv.jpg kdl40ex500

1-If the tv is ok with cut dimmer wire why not try to put
a manual dimmer control 1v to 3v with a 1k pot or a small
regulator for low output impedance from the 5v or 12v.

for all the solutions with a tv (not this one) is it possible to do:

2-with bl-on cut put a jumper with 100 ohm between power-on and bl-on to force inverter board

3-with bl-err cut force a good condition err
thanks :-)

[d.vh]

Re: 40" Sony LCD KDL-40EX500 Seconds to black (6 blinks)

Same issue. I pulled pin 14 from connector CN6402, labeled Dimmer. The Sony kdl-40ex501 came right up. No more 3 reboots; no more 6 blinks ... Awesome. Thx to tieny and budm. I had a great time trying to follow you both, and I understood enough to test the voltages on the board, and get to the solution. Are there any other downsides to disconnecting wire 14, besides dimmer functionality? Since this is part of the Protection system, what have I lost?