zsound

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About zsound

  1. Thank for the answer. Product very good, if not annoying troubles. A very duly course, overlapping of acoustics and amplifiers. The design very much has liked me. And sound director are pleased with quality of a sound. With the best regards. B)
  2. JBL PRX 535 S.N. P0747-010105 Power amplifier FR2-535 (by Crown) Loss of serviceability owing to a technological marriage. Complete check of a path. Partial (selective) dismantle of elements of the circuit. Are revealed: 1. Test gates of transistors of target cascades (FQP27P06; FQP30N06). Replacement FQP27P06, FQP30N06. 2. Test of the circuit of management of the power supply (TL494). Replacement. 3. Test of the circuit of management of the target cascade of the power supply (FAN7380). Replacement. 4. Test gates of transistors of the target cascade of the power supply (IRGB20B60PD1). Replacement. Replacement heatsink of a lining of the target cascade of the power supply. 5. Relay of a power unit, damaged of contact group.Replacement. Very very thanks for technical support of ?€œCrown?€?. Andrey Fomenko. (service engineer) (zsound99@mail.ru) ?€œSonic Service?€? Russia. http://foto.mail.ru/bk/zsound99/165/177.html http://foto.mail.ru/bk/zsound99/165/183.html http://foto.mail.ru/bk/zsound99/165/
  3. Prorblem FR2-535. P.N. 363902-002. Damaged mid frequency channel. The circuit diagram of power amplifier and power supply JBL PRX 535 (FR2-535) is very need me. Or, whenever possible, name of the circuit U603. Thanks!