Service manuals, schematics, eproms for electrical technicians
CF21A80Y
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390.0byte
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TV
EPROM
TV
EPROM
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Good luck to the repair!
Please do not offer the downloaded file for sell only use it for personal usage!
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CF-21A-80Y CF21A80Y CF 21 80
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Relevant TV forum topics:
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
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
Jo napot kivánok. Egy LC7.5 E LA Philips tv T CON modulon az elöző javitó az AS 15 G iC osztó ellenálásait kiforasztás közbe leseperte ,vissza is rakta ugyan, de nem jo sorrendbe. Kérem azt a tanyázo kolégát aki rendelkezik egy ilyen panellel ,és ráérne hogy az AS15G 22,23,24,25,26,27,28,29 lábai között levő ellenálások értékeit megmérné és megirná .Előre is köszönöm.
| Sziasztok! Problémám van az LG 32LB5610-ZC TV-vel (2014-es gyártmány) A TV kikapcsolása után visszaáll a gyári beállításokra (nyelv, régió kiválasztása, programok keresése. Gyári beállításokra visszaállítottam. Sajnos hiba megmaradt. Lg honlapjáról levett frissítéssel mindig csak a multimédiás ablak nyílik meg. Valakinek nincs-e frissítése ehhez a csodához (USB ). Üdv: |
Üdv. Mester urak!
Fenti TV bekapcsolás után aktiválja a H védelmet. A BU508 kollektorán a feszültségcsúcsok vagy 250V-al nagyobbak az sm-ben megadott ábrán (17) lévőnél, elérik az 1500V-ot. A +C is megnövekedett 240V-ra. +A-t beállítottam 155V-ra. Képcső: Thomson E66EHJ. A T52001 (BC637) kollektorán a jel (15) megegyezik a megadottakkal. Azt szeretném kérdezni, hogy mi okozhatja ezt a feszültségnövekedést a sorvégfokban. Előre is kösz.
Ja és a kép, meg a sorméret is kisebb a kelleténél (2-3cm). Geometriailag nem torz.