Mulja tv repair portal
Equipment Repairs => LCD TV forum => Topic started by: Davy on November 06, 2022,14:55:13
-
I have a M&B KB-432706F LED telly, the guy asked me to try and repait it out of sentimental values. He was honest enough tel tell me the story, he lived in a block of flats that was struck by lightening thats used a communal aerial. I told him it may prove expensive and would be wiser to buy a new TV since a lightening strik could be disasterous, he was willing to pay for whatever he needed to attempt a fix.
The power supply board is a Vestel 15IPS12, I fitted a new one the set power powers up and goes into tuning mode.... but when doing a set-up I get a 'no stations found' message, so looking like the tuner may have been clobbered.
No visible damage can be seen on the main board, but the live side of the power board got clobbered with burn and scorch marks around the main input fuse are, with a hole in the switch-mode control chip.
Anyone knows what the main board is? I'm assuming the tuners is kaputt or simply wants new firmware.
Thanks Dave
-
Mitchell & Brown TV Sorted.
These sets belong to M&K a firm in Bolton and can be obtained via Euronics they told me, they seem to be far more reliable than their other counterparts.
The main board is a Vestel a 17MB140 and the power board a Vestel 15IPS12. Now dig this, I bought a main power board from elsewhere, it'd tune the stations but thats all it did.... no one seemed to know of the main board, it took me some time to discover the makers of these M&B sets - right on my door step they were.
They sent me free of charge the main board.... but it was the wrong type, they ordered me the proper board that took quite some while to come, they didn't post it, they brought it....!"
The even sent me the firmware to mend the original board which made no difference.... I discovered why when I removed the tiny tuner block.... it was black as night with one tiny smd chip vaporised.. they owner did say it was struck by lightening.
I don't know what it is but there's something about these sets that make the picture appear to pop out at you compared to the other Vestel boards, I saw on their adverts they were guaranteed 7 years...!
Sorry for not getting back sooner. Dave