Hi guys, i was given a dead sony DVP-S9000ES i.e- won't turn on. I checked the fuse -not burned. There is no light, or switching on of relays to transformer of the audio boards. I am not sure where to go from here. Thanks in advance.
Quan
Quan
Looks like there may be a service manual with schematics: https://www.manualslib.com/manual/899217/Sony-Dvp-S9000es.html
Thanks guys, there's line of continuous 5 v in the standby supply. There are lots of components along the line. What would be most likely component to fail to disrupt the continuous 5 V line ?.
Quan
Quan
i use one of these and find it to be a excellent unit, i have only one sa cd and it does do a nice job of decoding that disc,will you use it for movies or music? it will do both well,
mike
Okay, good. You can find a manual for it by Googling. Probably good to see if it works, if it has probes, etc.
Thing is this: If you want to have an electronics hobby or be able to fix electronics stuff then you really need at a minimum to have a DVM and a scope. Then you need to learn how to use them. It can take some time, up to you if you want to do it. If you do, I would be happy to provide some links to helpful info, etc.
Regarding troubleshooting electronics, there are various ways to look at it but one of the first practical things to check when something doesn't seem to be working at all are the power supply voltages and the turn-on circuitry. Could be the unit is mostly powered up but the display and controls are not working. Something like that. A DVM is good for looking at DC voltages, low frequency AC, measuring resistance, etc. Read the manual to find out all the features, right? The scope is mostly for measuring AC voltages, and for looking at voltage waveform shapes. Between the two pieces of test gear its possible to troubleshoot all sorts of problems.
When you find something that doesn't appear to be working, say, maybe the turn-on circuitry, then we could look at the schematic and think of some measurements to help narrow down the possibilities for what might be wrong.
Thing is this: If you want to have an electronics hobby or be able to fix electronics stuff then you really need at a minimum to have a DVM and a scope. Then you need to learn how to use them. It can take some time, up to you if you want to do it. If you do, I would be happy to provide some links to helpful info, etc.
Regarding troubleshooting electronics, there are various ways to look at it but one of the first practical things to check when something doesn't seem to be working at all are the power supply voltages and the turn-on circuitry. Could be the unit is mostly powered up but the display and controls are not working. Something like that. A DVM is good for looking at DC voltages, low frequency AC, measuring resistance, etc. Read the manual to find out all the features, right? The scope is mostly for measuring AC voltages, and for looking at voltage waveform shapes. Between the two pieces of test gear its possible to troubleshoot all sorts of problems.
When you find something that doesn't appear to be working, say, maybe the turn-on circuitry, then we could look at the schematic and think of some measurements to help narrow down the possibilities for what might be wrong.
Thanks Mark, was meant to watch a few you tube clips then trying it out. I had a look at the schematic and trying to make sense of it. There is continuous 5VDC lines-ever. As suggested as previous post to take a look at the 5VDC line first. I can see that the relay to would allow powering of audio and digital board is off due to the fault in the 5VDC line as the relay does not switch on.
Quan
Quan
Looking at the schematic, power comes in at the AC-113/114 board. Q101 on that board controls the power-on relay. The relay power comes from the continuous 5v supply. Q101 is controlled by way of the FR-172 BOARD via the P.CONT signal. The signal then continues to the FL-114 BOARD, IC204, pin 24. A summary of IC201 pin functions is shown on page 5-1 of the service manual.
Normal power-on is as described on page 1-4 of the manual. Pressing the power button should caused the power indicator to light up red. Then according to step 3:
"Press [tray open button] on the player, and place a disc on the disc tray.
The player automatically turns on and the power indicator lights up in green."
What happens when you turn on the power button? No red indicator? If not then we need see if IC201 is trying to turn on Q101 and the power relay. If IC201 isn't turning on the P. CONT signal, then we probably need to look at the power switch and whatever IC looks at the switch status.
Normal power-on is as described on page 1-4 of the manual. Pressing the power button should caused the power indicator to light up red. Then according to step 3:
"Press [tray open button] on the player, and place a disc on the disc tray.
The player automatically turns on and the power indicator lights up in green."
What happens when you turn on the power button? No red indicator? If not then we need see if IC201 is trying to turn on Q101 and the power relay. If IC201 isn't turning on the P. CONT signal, then we probably need to look at the power switch and whatever IC looks at the switch status.
Hi Mark, thanks for having a look. I am confused regard IC204 are you referring to that control the Q101 relay via pin 24?. My model -Australia- i could not see IC201.
Quan
Quan
IF I am reading the service manual correctly, on page 79 / 143 of the service manual PDF, also numbered as page 4-47 of the original document (which can be seen at the bottom of the page), on a PCB labeled as FL-114 BOARD there is an IC labeled as IC204. Pin 24 of that IC is labeled as P-CONT. If you follow the wiring through cables and circuit boards of that signal, P-CONT, it eventually can be traced back to Q101 on the AC input board. Sometimes P-CONT is called P.CONT or P. CONT (with a space before the C). Depends which board you are looking at. So, if you player is like what it shows in the service manual, there should be a PCB somewhere labeled FL-114, and it is supposed to have an IC204 on it. Does your player have any board in it labeled FL-114?
To help find the things I have been trying to describe, you can use the search function (CTRL + f) in your PDF viewer program to find the original document page numbers, ICs, circuit board names, and or signal name locations.
To help find the things I have been trying to describe, you can use the search function (CTRL + f) in your PDF viewer program to find the original document page numbers, ICs, circuit board names, and or signal name locations.
Yes, i can see IC204 on FL -114board. BTW when i turned on power control button red indicator is OFF.
Quan
Quan
In that case we see from the table of contents in the service manual starts on page 3-19. Using the 'find' function, search for 3-19 which eventually finds the block diagram for the power system. On the right side there is a box labeled 'switch block.' It connects to the FL-114 BOARD. In the box representing FL-114, there is a note saying the schematic for that board starts on page 4-79. So we use the 'find' function <ctrl+f> to find page 4-79 and see what it shows. That takes us to the first sheet of the FL114 board. Scrolling down to page 4-81 we find sheet 2 of the schematic. We see that CN203 is the connector for the switch block. LED signals are on pins 1,3,8. Doesn't look like there is a schematic for the switch block, but there are two signals labeled A/D6, A/D7 that go to IC204, pins 79,80. Those may be for the power button, not sure. You might need to look at the switch block board to if those are the power switch signals or something else.
Maybe the switch isn't getting 5v power, maybe it has a bad cable, maybe the switch is bad, and or maybe the LED is faulty. Maybe IC204 is bad, or maybe it is looking for some other input signals to tell it to turn on the red LED, etc. You may need to take a look at the boards physically, the connectors, take some voltage measurements as the power button is pushed, etc., in order to figure out if the power switch signal is getting to IC204, and so.
Hopefully you are starting to see how to use the service manual and the find function to trace out signal flow in the device you are trying to troubleshoot?
Maybe the switch isn't getting 5v power, maybe it has a bad cable, maybe the switch is bad, and or maybe the LED is faulty. Maybe IC204 is bad, or maybe it is looking for some other input signals to tell it to turn on the red LED, etc. You may need to take a look at the boards physically, the connectors, take some voltage measurements as the power button is pushed, etc., in order to figure out if the power switch signal is getting to IC204, and so.
Hopefully you are starting to see how to use the service manual and the find function to trace out signal flow in the device you are trying to troubleshoot?
Thanks Mark for the detail explanation. Unfortunately i can not get access to my garage due to the recent deluge of rains. I need to clean up first once the rain stop and will report back regard your suggestions above.
Quan
Quan
Hi Mark, finally got the chance to check the board. Physically everything looks clean ,nothing appeared unusual. I checked the voltage lines including 5v, and 3.3V all good via the connectors.
Quan
Quan
Okay. Probably time to check resistances and or voltages at the Switch Block board and the related signals around IC204. Make sure IC204 is getting a signal from the power switch when it is operated. Also make sure IC204 is getting its own power. Page numbers for the related schematics are given in my previous posts above.