How to Fix a Grundig RR 1140 SL Professional Tape Mechanism
Nothing Works
24,218 views
Please turn on Closed Captioning (CC) for an explanation of what's happening in the video.
This radio-cassette recorder, manufactured in 1981, showcased Grundig's technological advancements. It features functions such as tape auto-reverse, tape equalization and 8 programmable FM stations stored in the on-board EEPROM.
Like the contemporary Satellit models it allows excellent reception on three separate shortwave bands, together with a digital frequency counter display and a large fast/slow tuning knob for precise tuning.
It could also turn on automatically at specific times of the day/year (such as one's birthday) via the on-board 24-hour clock.
An excellent design well-deserving the "Professional" label.
This video shows how to disassemble the unit and fix the tape mechanism. It is an involved job requiring careful mechanism surgery and rejuvenation of the electronics PCB of the cassette section.
At the end I test the fix with a song recorded from @TapeheadToo 's @rush 50-something Los Angeles show featuring @anykmusic on drums.
0:00:00 Introduction
0:00:10 Problem
0:00:20 Disassembly
0:01:44 Removal of the tape mechanism
0:03:12 Mechanism and PCB disassembly
0:03:22 PCB removal
0:04:00 Diagnosis
0:04:07 3D printing a new part
0:04:58 Rejuvenation of PCB sliding contacts
0:08:25 Rejuvenation of VAT potentiometer
0:11:35 Installing the 3D printed part
0:12:30 Testing the tape mechanism
0:13:30 All fixed!
#grundig #restoration #cassette #electronicsrepair #boombox
7 Comments
I am a man living in South Asia and this is the first time i am seeing a model like this one from Grundig of Germany !!
I noted that it has the auto reverse feature for cassettes. What is the size of the speakers!? Does it have seperate Bass and Treble controls!? Can you please tell me the rated RMS power output of this radio cassette recorder!?
Thank you for the video !
How to Fix a Grundig RR 1140 SL Professional Tape Mechanism
Nothing Works
24,218 views
Please turn on Closed Captioning (CC) for an explanation of what's happening in the video.
This radio-cassette recorder, manufactured in 1981, showcased Grundig's technological advancements. It features functions such as tape auto-reverse, tape equalization and 8 programmable FM stations stored in the on-board EEPROM.
Like the contemporary Satellit models it allows excellent reception on three separate shortwave bands, together with a digital frequency counter display and a large fast/slow tuning knob for precise tuning.
It could also turn on automatically at specific times of the day/year (such as one's birthday) via the on-board 24-hour clock.
An excellent design well-deserving the "Professional" label.
This video shows how to disassemble the unit and fix the tape mechanism. It is an involved job requiring careful mechanism surgery and rejuvenation of the electronics PCB of the cassette section.
At the end I test the fix with a song recorded from @TapeheadToo 's @rush 50-something Los Angeles show featuring @anykmusic on drums.
0:00:00 Introduction
0:00:10 Problem
0:00:20 Disassembly
0:01:44 Removal of the tape mechanism
0:03:12 Mechanism and PCB disassembly
0:03:22 PCB removal
0:04:00 Diagnosis
0:04:07 3D printing a new part
0:04:58 Rejuvenation of PCB sliding contacts
0:08:25 Rejuvenation of VAT potentiometer
0:11:35 Installing the 3D printed part
0:12:30 Testing the tape mechanism
0:13:30 All fixed!
#grundig #restoration #cassette #electronicsrepair #boombox