Hello, how are you, by chance I wouldn't have the circuit diagram of the HDL20 or the HDL6. I have 2 with the source burned out and there are some component values that I can't get
Am in Kenya en I have HDL 26 A having a problem in Small ic en transistor that got shot what should I do in order to get repaired.I mean the Power source transistor and ic hve crashed
I have three of these that were linked. Unfortunately the live wire touched the earth wire in the PCON plug. All three have power but no sound, the LEDs are all lighting up and I suspect the ADA IC to be damaged or the PIC; what do you think? The manufacturer won't supply spare parts.
Great work, sir. Having similar issues with 2 RCF HDL-20A which fail to power on. Both of these amps had shorted Mosfets '6R190C6' as well as Driver IC 'S21531D' which have been replaced. Also replaced the 2 big electrolytic capacitors, the fuse, some burned SMD resistors (all on the power/hot side). Checked remaining SMD resistors & transistors and the values match with those from a working amp. The voltage at the SMD capacitor which sits right before the S21531D chip should get 14-15 volts otherwise the amp will not power on but unfortunately on these the cap is only getting 8.5 volts. Any idea what the issue could be?
@@TKFElectronics Issue resolved. In one amplifier I had to change the SMD capacitor (1μF) to the right of the one mentioned above which was not receiving the 15VDCs and above the resistor marked 1089 plus the change of the 1BW transistor, driver IC S21531D and the 6R190C6 mosfets. The second one I had to change the same components except the SMD capacitor (1μF). Another issue is that the S21531D doesn't like to be soldered with hot air; I had to do it with a soldering iron.
Hi. Great work, do you have time to help me with a question? I removed the 2x IRS20955STRPBF from a RCF 715 module because i was getting voltage on the output transistors with no input signal. But, not long after removing the ic's the power supply went dead, i was going to probe voltages. Did i somehow kill the power supply of is this just a safety feature? Will power come back once i replace the IRS20955STRPBF's? If i manage to get power back but the issue came from before IRS20955STRPBF what else should i look at? It is on a Mk4 and there is no glue on the underside. Thanks PS. Can i poke around the op amps and dsp ic's with an oscilloscope to try to see where this strange signal starts?
On this RCF hdl20a…Do you know what the gray colored unmarked smd components are located near the ribbon? I have a picture of the components in question that I can send to your email….And by any chance do you have a schematic?
![🎤 ไปกันต่อออ! จับฉลากร้องเพลง x P’ #XXSIVK [EP.2] (1/2) เพลงของใครจึ้งสุดน้าา 💓🎤 #MXFRUIT](http://i.ytimg.com/vi/mLI_K0sAS4o/mqdefault.jpg)
Thanks my friend 👍
Hello, how are you, by chance I wouldn't have the circuit diagram of the HDL20 or the HDL6. I have 2 with the source burned out and there are some component values that I can't get
Am in Kenya en I have HDL 26 A having a problem in Small ic en transistor that got shot what should I do in order to get repaired.I mean the Power source transistor and ic hve crashed
I have three of these that were linked. Unfortunately the live wire touched the earth wire in the PCON plug. All three have power but no sound, the LEDs are all lighting up and I suspect the ADA IC to be damaged or the PIC; what do you think? The manufacturer won't supply spare parts.
Você trocou o ic ir2153 e qual esse outro transistor cadastrado que vc trocou? Desde já agradeço pela atenção
Dear San I have rcf evox8.. It has very low sound, also hf sound mixed with lf..
May be problem in amplifier section or pre amp circuit
What is part no of the transistor?
Part no.BC546 it's a NPN transistor bro
Good
Great work, sir.
Having similar issues with 2 RCF HDL-20A which fail to power on.
Both of these amps had shorted Mosfets '6R190C6' as well as Driver IC 'S21531D' which have been replaced. Also replaced the 2 big electrolytic capacitors, the fuse, some burned SMD resistors (all on the power/hot side).
Checked remaining SMD resistors & transistors and the values match with those from a working amp.
The voltage at the SMD capacitor which sits right before the S21531D chip should get 14-15 volts otherwise the amp will not power on but unfortunately on these the cap is only getting 8.5 volts.
Any idea what the issue could be?
I think may be any smd components located near ic might be weak or leakage, may be i am not sure.
@@TKFElectronics
Issue resolved.
In one amplifier I had to change the SMD capacitor (1μF) to the right of the one mentioned above which was not receiving the 15VDCs and above the resistor marked 1089 plus the change of the 1BW transistor, driver IC S21531D and the 6R190C6 mosfets. The second one I had to change the same components except the SMD capacitor (1μF). Another issue is that the S21531D doesn't like to be soldered with hot air; I had to do it with a soldering iron.
Hi. Great work, do you have time to help me with a question? I removed the 2x IRS20955STRPBF from a RCF 715 module because i was getting voltage on the output transistors with no input signal. But, not long after removing the ic's the power supply went dead, i was going to probe voltages. Did i somehow kill the power supply of is this just a safety feature? Will power come back once i replace the IRS20955STRPBF's?
If i manage to get power back but the issue came from before IRS20955STRPBF what else should i look at? It is on a Mk4 and there is no glue on the underside.
Thanks
PS. Can i poke around the op amps and dsp ic's with an oscilloscope to try to see where this strange signal starts?
Please email on this electronicstkf@gmail.com
On this RCF hdl20a…Do you know what the gray colored unmarked smd components are located near the ribbon? I have a picture of the components in question that I can send to your email….And by any chance do you have a schematic?
In order to guide u clearly bro,Pls what's app photo of that perticular smd component.
Ok sent to u on WhatsApp
Ok
sir in ht iv 300 no hdmi output when i connect to tv ans sourround speaker not working nd all 4 speaker working.
May be most probably problem is in main digital board
@@TKFElectronics can it be repaired
Yes but need to check first
show