• Amplituner Yamaha RX-V379 - Brak zasilania

It is currently 14 December 2024, 04:25

Amplituner Yamaha RX-V379 - Brak zasilania

 Forum rules: Click here to view the forum rules

  1. Topic title should contain: the device's manufacturer, full model and the brief description of problem.
  2. Topic message should contain: the PCB marking code (required in case of hardware repairs), an extended description of problem, things you have checked/replaced/measured, your conclusions and the question. If you are not able to find the PCB marking code, please read THIS TOPIC. If you still cannot locate the PCB markings, please upload a clean, both-side photos of the mainboard - it is required to remove any films, modules or brackets possibly covering these markings.
  3. Before posting a new topic please read all topics in TRAININGS subforum and make a preliminary diagnostic based on the content of those trainings.
  4. Uploading of any complete schematics, BIOS / firmware files or any other kind of documentation, or linking to 3rd party websites with such files, is STRICTLY PROHIBITED. You can only upload the small portion of documentation or, link to BIOS file on UNVERIFIED BIOS FILES subforum, which simplifies the diagnostics/repair. You are not allowed to upload more then one complete page of instruction/schematic per single topic. The file you upload must not contain any watermarks, "confidential" markings, links or email addresses and cannot be password-protected.
  5. It is only permitted to describe one faulty device per single topic - you should always open a new topic for each subsequent device.
  6. Requesting of the full schematics, BoardView files, BIOS files or any other kind of documentation is NOT ALLOWED in this subforum. If you need to ask for any of these, you should open a new topic in DOCUMENTATION/BIOS REQUEST subforum.
 This topic is marked as ARCHIVAL. Please only reply if your message contains the solution (Terms and Conditions p. 12.1).

#1 Amplituner Yamaha RX-V379 - Brak zasilania

by bar007 • 27 November 2023, 15:59
Amplituner przez jakiś czas wyłączał się, ale wystarczyło odłączyć zasilanie, podłączyć je ponownie i amplituner znowu działał. Aż do dnia kiedy zgasł i już się nie uruchomił.

AC_IN wchodzi na transformator T1501. Transformator załącza się i na złączu CB151 mamy napięcia S9 i ACDET.
Image
Następnie na złączu CB131 mamy napięcie ACPWR_PDET 3,29V oraz 3,3V (Linia 3,3M)
Image
Zasilania wchodzą na mikroprocesor IC221 (Toshiba TMPM362F10FG). 3,3V obecne na pinach: 4,47,89,114,117, 121,123(ACPWR_DET),125,130.
Image

Jak dobrze czytam schemat to IC221 na 49 pinie powinno wystawić 3V PWR_RY, którego nie ma. A to ten sygnał załącza RY151 i transformator Main Power Supply. Sugeruje mi to uszkodzony IC221.
Jak podaje "ręcznie" napięcie 3V na linie PWR_RY transformator Main Power Supply załącza się i mam napięcia na złączu CB135.

Czy powinienem wymienić IC221 (Toshiba TMPM362F10FG)? Czy ten układ jest zaprogramowany i może program się wysypał? Jeżeli jest zaprogramowany czy jestem wstanie zaprogramować go jeszcze raz? Ewentualnie przenieść WSAD na nowy układ?

W załączniku schemat.

Re: Amplituner Yamaha RX-V379 - Brak zasilania

by Google Adsense [BOT] • 27 November 2023, 15:59
 This topic is marked as ARCHIVAL. Please only reply if your message contains the solution (Terms and Conditions p. 12.1).
Similar Topics
  amplituner yamaha HTR 3063 - brak dźwięku.
  Wzmacniacz Yamaha AX-550 - brak regulacji głośności dźwięku  [SOLVED]
  YAMAHA TYROS 2 - SHARP model: B099 V555750 - nie uruchamia się  [SOLVED]
  Dell 7588 La-E994P, Brak obrazu - brak zasilania CPU  [SOLVED]
MacBook A2141 płyta 820-01700 brak obrazu brak zasilania GPU
[BOARDVIEW REQUEST] XFX RX 6600XT SWFT 210

Who is online

Users browsing this forum: No registered users and 1 guest

_______________________________
All rights reserved. Unauthorised copying of this website's content or any of its part is strictly forbidden.
Any trademarks, brand names, products or services published on this website belong to their legal owners, are copyrighted and used for information purposes only.
cron