Robert63
Javi molim te gde je taj reciklazni kontejner posto imam i ja jedan NVG-33 (prva cetvoroglava azdaja ne tako davne 1990 godine)sa takodje neispravnim izvorom.
Popravljan je dva puta(oba puta kvar u napajanju nakon nestanka mreznog napona)kod ovlascenog RTV servisera.
Vise nemam nameru da se bavim tim sportom, te u cilju ekologije, ozonskih rupa i mira u svetu ostaje jedino taj reciklazni kontejner.
Pozdrav.

Panasonic VCR SMPS
The same power supply design is used with minor variations in a wide variety of Panasonic (and clone) VCRs from the 1980s and 1990s (and may continue to this day). Depending on the specific model, there may slightly different output voltages and number of outputs but the general organization is identical. These use discrete components throughout with feedback from the primary output (5 to 5.2 V depending on model) using an optoisolator to essentially short out the drive to the main chopper transistor (Q1) when the output equals the desired voltage. The most common problems found with any of these supplies is dried up electrolytic capacitors. Generally, the first to go will be C16 and C17 on the +5.1 VDC line and/or C21 in the feedback path (actual part type and number may vary slightly with model). Symptoms will be either that the primary output is somewhat low (4 to 4.5 VDC) or that the supply has gone overvoltage and blown the protection zener (D15) resulting in a high pitched whine as the chopper struggles to drive current into a short circuit (this usually doesn't damage any other parts if caught in a reasonably timely manner). If any capacitor related problems are found, it is a good idea to replace all the electrolytics in the supply.


Ovo nadjoh..ne znam jel vazi u tvom slucaju

imam ja semu mreze za vas video, mogu vam pomoci ako je to jos uvek aktuelno

Nasao sam i ja semu za Panasonic NV-G40 (4.09Mb)

Al' napajanje nikako da proradi-a da ne "varnici i da gori pola ploce",

Sta god premerim--sve je ispravno.

Bas-bas muka ziva !--u dijagnozi kvara.

Poz



_{[Ovu poruku je menjao robert63 dana 21.07.2009. u 19:48 GMT+1]}

onda vam jedino mogu pomoci. da vam dam drugu istu taku mrezu pa da uporedite