Gefunden für piezo pickup - Zum Elektronik Forum |
| 1 - Noisy picture -- Videorecorder Grundig 2280 a |
| Hello and welcome back again!
1. Which restistors do you mean? Do you have a service manual? In the sm, all allign points (for service) are described, and those having no description MUST NOT get disadjusted! They are adjusted in GRUNDIG factory after production and can not get alligned by "normal" technicans. 2. It looks like a) the video heads are worn, so the DTF signals (recorded with the video signal) are read faulty. V-2000 works without a "normal" sync track, like VHS or Betamax. V-2000 has 5 different frequences recorded on the helical scan tracks. In play mode, these five signals get to the DTF-control, then the DTF module serves the DTF voltages to the piezo elements, on which the video heads are mounted. This is, why V-2000 can offer perfect clear picture search FF and REW. It is a really difficult "dynamic track following" system, and some troubles have not been removed entirely until the end of the system V-2000. Now, after more than 25 years, the tapes have get older as well as the machines. It is nearly impossible today, to play a V-2000 tape in the same perfect quality as it was recorded. Even a new recording - the tape material is old! I hope, you have checked all of the voltages... |
|
Zum Ersatzteileshop Bezeichnungen von Produkten, Abbildungen und Logos , die in diesem Forum oder im Shop verwendet werden, sind Eigentum des entsprechenden Herstellers oder Besitzers. Diese dienen lediglich zur Identifikation! gerechnet auf die letzten 30 Tage haben wir 8 Beiträge im Durchschnitt pro Tag heute wurden bisher 7 Beiträge verfasst 6 Besucher in den letzten 60 Sekunden alle 10.00 Sekunden ein neuer Besucher ---- logout ----su ---- logout ---- |