Hello - I'm looking for a repair shop in Pattaya which could be trusted to fix an amplifier which has a channel which has mysteriously stopped working since I moved to Thailand. It's a ShengYa amplifier (same manufacturer as Vincent), and they don't have a service center or dealer in Thailand, and I'm trying to avoid sending the amp back to China for service. It's a good amplifier, and I'd prefer to have someone credible take a look at it, rather than take my chances with a random repair shop.

Any suggestions for a good hi-fi repair shop in Pattaya or the surrounding area, or even Bangkok, would be much appreciated. Thank you.

You're problem sounds all too common! It's most likely because of corroded contacts.

I bring my old Denon amp regularly to a shop in Soi Siam Country Club...about 1 or 2 km in the soi from Sukhumvit. A shop house on the left side with plenty of washing machines, TVs etc. in front of it. Doesn't look trustworthy at all, but they did a good job at a couple of 100 Baht.

You're problem sounds all too common! It's most likely because of corroded contacts.

I bring my old Denon amp regularly to a shop in Soi Siam Country Club...about 1 or 2 km in the soi from Sukhumvit. A shop house on the left side with plenty of washing machines, TVs etc. in front of it. Doesn't look trustworthy at all, but they did a good job at a couple of 100 Baht.

Thanks for the advice Raro. I'm guessing that it must be something corrosion related too, as it was in storage for a bit while it made its way here to Pattaya, and everything was hot and kind of damp when it was unpacked here in Pattaya.

I will check out the shop you mentioned. Thanks again.

Steve

if your ever in bangkok i can look at it for you, more than likely it is a defective transistor(s)

or one of the op-amps.

the output section of most amps have trasistors that work in parrallel, meaning that there could be 1 or more on the positive side and 1 or more on the negative side.

if 1 is bad per polarity , all the transistors must be changed for the given polarity or will not be stable.

no need to send it to china, a transistor cost about 25 baht.

the transistors are usually matching pairs one for negative side(speaker goes in)

and

a transistor for the positive side (speaker goes out)

both tied into ground .

if it is an opamp that has gone bad, this will have the greatest effect on sound quality...and a replacement should be matched to the original.

or it may just be a bad rca cable

In case anyone reads my earlier post - I was able to find a place in Pattaya to repair the amplifier. In the basement of the TukCom building on Pattaya Tai, there is a large electronics repair shop named Amorn (spelling may be wrong). They fixed the broken channel, and it worked for about 6 months, and broke again, and then they fixed it again. Not sure if they did not fix it correctly the first time, or if there will always be a reoccuring problem.

This shop would be worth a try if you have something to repair - they seemed to repair all types of electronics and were fairly professional.

if your ever in bangkok i can look at it for you, more than likely it is a defective transistor(s)

or one of the op-amps.

the output section of most amps have trasistors that work in parrallel, meaning that there could be 1 or more on the positive side and 1 or more on the negative side.

if 1 is bad per polarity , all the transistors must be changed for the given polarity or will not be stable.

no need to send it to china, a transistor cost about 25 baht.

the transistors are usually matching pairs one for negative side(speaker goes in)

and

a transistor for the positive side (speaker goes out)

both tied into ground .

if it is an opamp that has gone bad, this will have the greatest effect on sound quality...and a replacement should be matched to the original.

or it may just be a bad rca cable

Clipped you talk op amp. Great!!

I am an audiophile of the sicker dimension.

I still have a pair of Wilson Audio speaks back in the US that I am trying to get out here. 1 pair here, but condo limits use, full set will demand a house. So we are in the market.

Any idea where I can get some rubberized methylcrylate (sp) glue for the foam on my recently demised AE-1's. Acoustic energy will send me the new surrounds, but insist on this glue for original sound quality.

Glue ain't a tube or an op-amp, just thought ya might have a clue.

Ever hear of Norh, Thai speak and electronics manufacturer?

kdf

tried PM, but says you do not take pm.

if your ever in bangkok i can look at it for you, more than likely it is a defective transistor(s)

or one of the op-amps.

the output section of most amps have trasistors that work in parrallel, meaning that there could be 1 or more on the positive side and 1 or more on the negative side.

if 1 is bad per polarity , all the transistors must be changed for the given polarity or will not be stable.

no need to send it to china, a transistor cost about 25 baht.

the transistors are usually matching pairs one for negative side(speaker goes in)

and

a transistor for the positive side (speaker goes out)

both tied into ground .

if it is an opamp that has gone bad, this will have the greatest effect on sound quality...and a replacement should be matched to the original.

or it may just be a bad rca cable

Clipped you talk op amp. Great!!

I am an audiophile of the sicker dimension.

I still have a pair of Wilson Audio speaks back in the US that I am trying to get out here. 1 pair here, but condo limits use, full set will demand a house. So we are in the market.

Any idea where I can get some rubberized methylcrylate (sp) glue for the foam on my recently demised AE-1's. Acoustic energy will send me the new surrounds, but insist on this glue for original sound quality.

Glue ain't a tube or an op-amp, just thought ya might have a clue.

Ever hear of Norh, Thai speak and electronics manufacturer?

kdf

tried PM, but says you do not take pm.

You can find methylarylate in every 7/11, they sell it as "superglue".

I do know Norh, very nice speakers and not too expensive!

You can find methylarylate in every 7/11, they sell it as "superglue".

I do know Norh, very nice speakers and not too expensive!

No go on superglue.

You left out the rubberized part. Retains the flexibility required for this application.

kdf