This elderly monster arrived with the error “ 4 blinks “ which the manual suggests is a power board fault
There are TWO power boards and a standby power board inside
On removing rear cover there were two swollen 220uf caps on the standby board, sadly replacing them the 4 blinks remained
Swapping the two power boards over[ as they look identical , gives a “ 2 Blink “ error , the limited info in the manual suggesting that the fault is on the lower board [ main 2 ]
Both boards have a PFC voltage of around 380 volts at switch on before the relays click out
I have done cold checks on both boards and there are no obvious differences
As the manual has only a block diagram of the power supply it’s difficult to be sure of values / voltages
Has anybody seen or worked one of these or similar beasts and managed to diagnose the problem
Thanks for looking
Regards Ken
Szép napot Mesterek! A fenti tv kapcsolási rajzát keresem,esetleg, ha lenne róla valamicske plusz leírás, az is jó lenne.Köszönöm.
Udv tisztelt sorstarsak!Fent emlitett keszulekben sorvegfok halala kovetkezett be!Kornyeket kimerve nem talaltam semmi gyanusat.Tapfeszultseg 120V,impulzuskondi ok,megis csere utan az uj tranyo azonnal elpukkant(cso toltodese mintha tul nagy lenne).Driver betaplalas 45v,szurese jo.Trafocsere(uj).Jelenseg ugyanaz.Eredeti tranyo,ST1803DHI helyett,2SC5296 ment bele.Ennek jellemzoi hasonloak az eredetivel,legfeljebb melegednie szabadna,nem eldurrannia.
Otlete valakinek.
Tisztelettel:Feri
Üdv Mindenkinek!
Fent nevezett ezt produkálja. Újraindításnál rugdossa a demag relét, miközben a sor él, hang van.
Képcsőt mérve: R 0,6, B 0,7, G 0,75.
Csöve:W76MAF 185X72. Tápok rendbe, (mind a prim mind a szek). Függ. cserélve, imp kondik szintén.
Mégis a képcső? Köszönettel.