Service manuals, schematics, eproms for electrical technicians

GRUNDIG CUC 1821

TV - EPROM
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TV
EPROM
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Relevant TV forum topics:
Grundig 32 VLE 4140 C TV nem indul
Sziasztok! Tudna valaki segíteni? A fenti TV nem indul az 5V készenléti meg van, a st.by fesz. megjön bekapcsoláskor, de ezen kívül semmi életjel nincs. Ha esetleg rajz volna... Köszönettel: Attila
Grundig 46 VLE 7139 BR LED TV standby LED pislog
Sziasztok
Grundig 46 VLE 7139 BR LED TV 
Amikor aram ala helyezem, a kek standby LED elhalvanyul parszor, de se kep se hang. Probalkozik igy nehanyszor, majd stabilan erosebb fenyerovel bekapcsolva marad. Gondolom ez a kikapcsolt allapot.
A TV tapja Delta DPS-214CP
Amig probal bekapcsolni, addig a feszultsegek a kovetkezok:

+5V   5.22V
BL     0
DIM   3.36V
+24V  24.16V
STBY  4.87V
+12V   11.91V

Kb 30 masodperc utan a STBY lemegy nullara es igy megszunnek a feszultsegek is.
A LED inverter egy kulon lap, tipusa Samsung SSL460_3E2A
Ez megkapja a tapot (24V), de a ENA jel nulla.
Lehetne firmware problema? Ha igen, van valakinek USB-s firmware-e?
Elore is koszonom.

Minden jot,
Janos

P.S. Kozben meregettem meg. Ugy tunik, a LED inverter lesz. Neha egy pillanatra felvillan a vilagitas, ilyenkor megjelenik a VOUT, de rogton eltunik. Led szalagra gyanakodtam, de nincs infom rola hogy van bekotve. Az inverterrol 6 szalas kabel megy a ledekhez. Tudtommal 2 szalag van benne, 72 LED-es. Teszterrel kettot be tudok merni, 102-105 feszultseggel taplalja. Lehet a ketto kozotti kulonbseg 1 zarlatos LED es ennyire erzekeny, hogy lekapcsolja az egesz tapot?
GRUNDIG CUC 1822 időnként kikapcsol
A fenti Tv javításában kérem a segítségeteket. A jelenség az volt, hogy bizonytalan időközönként ( 2-3 perc ) kikapcsolt. Kis idő után rájöttem, hogy alacsony fényerőnél nem kapcsol ki csak magas fényerőnél. Így egyszerűnek tűnt mert a fehér képrészletek növekedésekor kikapcsolt a TV. A sugáráram korlátozó alkatrészeit átnéztem de hibás alkatrészt nem találtam.
Grundig CUC120 - Super Color A 7100 - CRT TV - Screen - Cinesc. is black
UPDATE: Note: This Model and CUC220, CUC720 almost identical My family b. this TV in 80' And worked ~15 years In 90' Black screen ... with Pot. in 100% Brightness, Contrast. In the end 90' puff doesn't work at all. Someone try repair but ... the same black screen. They reported ... try fix and get > Brightness In past 6 months, I repaired and new life come from the set, but now we get too much Brightness In your opinion ... the person try Adjust ... fix what? ABL - Automatic Brightness Limiter setup, regul.? R2533 R2538? Thank you for your comments, info. Ruy Please your comments: Brightness and Colour Pot. -> OK But Contrast Pot.: I can' rise ... NO FOCUS and washed out -> I only see a Blank RASTER. Best Regards, Ruy





__________________________________________________________________________________ ORIGINAL / PAST MSG Hi,
Super Color A 7100
The other sub-models in pag.1 - pdf
right bottom
elektrotanya.com/grundig_cuc120.pdf/download.html

The screen is black ... and we notice from time to time (when the image is very brig.) some small part of image.
Very few dots.

I tested the G1 2X V, G2 5XX V, Heather - G and J Volts in the neck of Cinesc.

Power Supply I tested +A 115 V, +C 200 V , +B 12V, +M 19V

In Pag. 6 - SSB and SB?         T2533

Thank you,
Ruy __________________________________________________________________________ Work with servers - OpenBSD, NetBSD, FreeBSD, Linux. Love Oscilloscope :-) , Repair, Satellite Dish, Multimeters. Have a Big Satellite Dish farm.
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