Service manuals, schematics, eproms for electrical technicians
OTAVA 25BC 25AC
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TV
SERVICE MANUAL
TV
SERVICE MANUAL
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Good luck to the repair!
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Looking for similar otava manual?
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OTAVA 25BC 25AC 25 BC AC
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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.
__________________________________________________________________________________ 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.
Sziasztok! A két IC felcserélhető egymással? A TDA helyett tenném a TEA-t.
Sziasztok!A fent nevezett készülék két áramszünet után a következőket produkálja.A főkapcsoló bekapcs után villog a piros led az elején.Rajzom már van,de minden ötletet szívesen fogadok.
Üdv:Geri
Üdvözletem!
Elnézést hogy rossz topikba írtam,de gondoltam mivel ugyan erről a tv-ről van szó (Orion T2835 STX PT90),szóval csak ezért.Még 1 szer bocs.
Akkor újra írom.Az STV9306A IC körül már mindent átnéztem és sehogy se tudok rájönni hogy mi okozza ezt a hibát.A teteje lejjebb és befordulva,a menü alig látszik és így még a szerviz menübe se tudok lépni.Ahol 24V-nak kellene lenni ott 26,6V van.A 12V rendben.Mit kéne még megnéznem ?
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