JR Radio & Spektrum Radios Discuss all your JR and Spektrum gear.

Need Help JR PCM 9X II

Old 07-19-2020, 03:05 PM
Junior Member
Thread Starter
Join Date: Jul 2020
Posts: 1
Likes: 0
Received 0 Likes on 0 Posts
Angry Need Help JR PCM 9X II

After re-reading a huge number of forums, I did not find the answer to my question. The essence is as follows. The specified transmitter worked without problems for several years. Then at one point the receiver stopped seeing the transmitter. The receiver is checked-working. The transmitter module is checked in another transmitter - everything works. During testing, I came to the conclusion that the transmitter itself does not work, or rather, the transmitter does not provide a signal of the required amplitude to the high-frequency module. On the working transmitter, the signal is about 5 volts. Inactive - equal to the transmitter battery voltage. Internal inspection - no damage and burnt parts were found. The transistor Q1 changed to another - nothing changed. The memory cells are all intact, the transmitter menu is fully functional. The only problem is that there is no ppm signal at the input to the RF module. Perhaps someone has encountered such a problem.
Old 08-09-2020, 08:23 PM
Join Date: Apr 2016
Posts: 206
Received 1 Like on 1 Post

sounds like the encoder chip or cct around that area.

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information -

Copyright 2021 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.