Samsung ht z310 home theatre repair resistor

Tr4kz · Joined: 09 Dec 2012 Posts: 2

Hello i have a samsung htz310 that says protect whenever i turn it on and shuts off, so i decided to open it up and i found a burn resistor the only problem is its so black and crispy i cant tell what the original values of the resistor was my question is does anyone have this same theatre system and if so can you tell me what the values are of resistor 91 heres a quick picture of it thanks in advance

vtech · Joined: 08 May 2006 Posts: 1264 Location: USA

According to the schematic of that unit, R91 is a 1K resistor on the secondary side and judging by the way it is burned, it is very likely that you have several other component failures. The manual is listed in the database archive.

Tr4kz · Joined: 09 Dec 2012 Posts: 2

Hey thanks for the response, sorry to bug but how do find the database archive i tried typing in the search ht z310 but bad results came up

vtech · Joined: 08 May 2006 Posts: 1264 Location: USA

Try htz210. it is the same manual. It is divided in 10 rar files. Need to get all and unrar it.

Guest · Posted: Tue Jul 15, 2014 8:46 pm Post subject:

Hi, how did it go?

I have a HT-Z310 with the same issue. The R91 is burned. Did you find why this happened? And where you able to repair it? I'm aware of how old the thread is Smile

sata · Joined: 15 Jul 2014 Posts: 1

Wops, I seemed to be logged out. Regarding the reasons behind it, I checked the page 4-25, sections 4-2-1 and 4-2-2. But it's difficult to confirm.. Once I've replaced the resistor I will try the 4-2-3 section.

Before I dismantled the unit the AMP heatsink was burning hot. And the fan wasn't running when I tried to start the unit, but the fan doesn't seem to have any issues.

DBullock.com · Joined: 26 Aug 2014 Posts: 2 Location: United Kingdom

Unit Power button flashing red... wont power up. Discovered the 1K resistor overheated but ok. Found dry solder joint on diode causing overheating and short circuit failure. Replaced both components and unit now works.

DBullock.com · Joined: 26 Aug 2014 Posts: 2 Location: United Kingdom

larseirk1 · Guest

Hi I'm Lars I'm trying to fix an old surround sound unit I have here.
It was fixed multiple times under warranty until it ran out.

I have pretty limited knowledge on electronics so if you have the time to help you may need to explain things slowly for me.

The unit was starting then shutting down and saying protect, this was with no speakers plugged in.

I removed the cover and through some trial and error found that if I disconnected the AMP pcb it would start and run a disc ect.

I then found on the main power board that # R91 a 1/4w 1k resistor was burnt, also found that a diode #D31 was blown in 2 pieces and 3 capacitors were also swollen on top C92 C93 and C94.

Now I replaced all these parts with new ones, It then didnt start at all just a flickering standby light which I think I read somewhere was a short circuit? Now if leave the AMP pcb plugged in and I cut the #D31 diode back out it would start again say protect and shut down.

If I disconnect the AMP pcb completely again (with the #d31 diode still not in there) it will start and run a dvd and can watch it on tv just no sound obviously.

Its not essential that I fix it just thought it would be fun and could save some dollars trying to do it.

Thanks in advance.