REPAIRING AND NOT THROWING AWAY

REPAIRING AND NOT THROWING AWAY

Richtige Fernseher haben Röhren!

Richtige Fernseher haben Röhren!

In Brief: On this site you will find pictures and technical information about Service Modes, Circuit Diagrams, Firmware Update procedure, Disassemble procedure, Universal remote control set-up codes, Troubleshooting and more....

If you go into the profession, you will obtain or have access to a variety of tech tips databases HERE IT IS Master Electronics Repair !.

These are an excellent investment where the saying: 'time-is-money' rules. However, to learn, you need to develop a general troubleshooting approach - a logical, methodical, method of narrowing down the problem. A tech tip database might suggest: 'Replace C536' for a particular symptom. This is good advice for a specific problem on one model. However, what you really want to understand is why C536 was the cause and how to pinpoint the culprit in general even if you don't have a service manual or schematic and your tech tip database doesn't have an entry for your sick TV or VCR.

While schematics are nice, you won't always have them or be able to justify the purchase for a one-of repair. Therefore, in many cases, some reverse engineering will be necessary. The time will be well spent since even if you don't see another instance of the same model in your entire lifetime, you will have learned something in the process that can be applied to other equipment problems.
As always, when you get stuck, checking out a tech-tips database may quickly identify your problem and solution.In that case, you can greatly simplify your troubleshooting or at least confirm a diagnosis before ordering parts.

Happy repairing!
Today, the West is headed for the abyss. For the ultimate fate of our disposable society is for that society itself to be disposed of. And this will happen sooner, rather than later.

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..............The bitterness of poor quality is remembered long after the sweetness of todays funny gadgets low price has faded from memory........ . . . . . .....
Don't forget the past, the end of the world is upon us! Pretty soon it will all turn to dust!

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All posts are presented here for informative, historical and educative purposes as applicable within fair use. NOTHING HERE IS FOR SALE !

Saturday, 15 February 2020

JBL PARTY BOX 100 BU CONNECTED HOME HOW TO DISASSEMBLE PROCEDURE, SOFTWARE UPGRADE AND RESET, ELECTRIC SCHEMATIC DIAGRAM, SHORT CIRCUIT AND THERMAL PROTECTION CIRCUITS

  JBLPARTYBOX100AM,JBLPARTYBOX100AS,JBLPARTYBOX100CN,JBLPARTYBOX100EU, JBLPARTYBOX100JN,JBLPARTYBOX100IN,JBLPARTYBOX100BR,JBLPARTYBOX100RU

Audio Amplifier Section
Set all additional processing (tone controls, equalizers, audio effects, etc) to native or bypass, Set Unit on Test mode, set digital generator either off if not additionally defined. Output resistive load = 4Ω, 2 channels loaded. All voltage measurements are made with RMS detector,1kHz signal,10Hz~22kHz
BW, unless otherwise specified.


Speaker Output(Aux-in and BT/USB)

Short circuit, overvoltage and thermal protection

Software upgrade and system Reset

Restore factory setting
1. Power on, Hold down<PLAY> and <VOLUME +>keys on the top panel about 10 seconds.
2. Then, the unit will power off, the reset successful.
3. After factory settings restored, the unit will reboot automatically.
Check software Version
1. Power on, the unit is nothing input（ No BT connection / No USB play / No AUX IN input.
2. Hold down <BASS BOOST> & <VOLUME - > keys on the top panel about 2 seconds.
3. The unit will voice playback software version.
4. The unit will exit the SW version speech mode automatically.
Software Upgrade via USB
1. Copy the firmware file (XXX.bin) into a USB flash drive.
2. Insert the USB flash drive to the set.
3. Hold down <VOLUME+> and < BT > keys on the top panel about 10 seconds. The right woofer LED will show red.
4. Starting to upgrade, The right woofer LED colour to white. White LED will display the upgrade progress.
5. Then, the unit will power off , the upgrade successful.
6. The unit will reboot automatically.

Disassembly procedures

How to dismantle PCBs

Dismantling of lighting PCBA and speaker drivers

Schematic diagram: Battery charge circuit

Circuit Diagram-MCU+DSP+AMP PCBA

Circuit Diagram-MCU+DSP+AMP PCBA

Power board (SMPS) schematic

Posted By: FRANK at 09:03